Tishtrya: The Star-Yazata of Rain
- Sherko Sabir
- 9 hours ago
- 11 min read
Introduction
Tishtrya is the radiant star-divinity of rain in Zoroastrianism, one of the lesser holy beings, the yazatas, who serve Ahura Mazda, the Wise Lord. He is the bright star that the ancient Iranians watched for at the edge of summer, the herald of the life-giving rains, and the hero of one of the most vivid and beloved myths in the whole tradition: the cosmic battle for the waters of the world.
In his great hymn, Tishtrya gallops as a shining white horse toward the cosmic sea to fight Apaosha, the dreadful demon of drought. At first he is beaten back, weakened because people had neglected to honour him; but strengthened by sacrifice he returns, conquers the demon, and looses the rains upon the parched and thirsting earth. It is a story about water and life, and about how the gods and humankind together keep the world alive, a theme as deep as the springs the Kurds and all the Iranic peoples have always held sacred, like the waters of Anahita.
Tishtrya's name still marks the calendar: the fourth month of the Iranian year, Tir, is named for him, and his ancient midsummer festival of Tiregan, a joyful feast of water and rain, is still celebrated. To follow his story is to enter a world where the turning of the seasons was a holy drama, and the falling of the rain a victory of good over evil.
Contents
Who Is Tishtrya?
Tishtrya (in Middle Persian Tishtar, in modern Persian Tir) is the yazata, or divinity, of rain and fertility in Zoroastrianism, who personifies the brilliant star Sirius. Celebrated in the Tishtar Yasht, he is famous for the cosmic battle in which, taking the form of a white horse, he fights and finally defeats Apaosha, the demon of drought, to release the rains upon the earth. He gives his name to the month of Tir and to the ancient rain-festival of Tiregan, and is honoured as the bringer of the waters on which all life depends.
Key Takeaways
Tishtrya is the Zoroastrian yazata of rain, personifying the star Sirius.
His great hymn is the Tishtar Yasht, or Tir Yasht.
He appears in three forms: a youth, a golden-horned bull, and a white horse.
He battles Apaosha, the demon of drought, who appears as a black horse.
Weakened at first, he wins only after Ahura Mazda offers sacrifice to strengthen him.
He is honoured at the midsummer water-festival of Tiregan, and names the month of Tir.
Quick Facts
Name: Tishtrya (Avestan); Tishtar (Middle Persian); Tir (modern Persian)
Type: Yazata of rain and fertility, personifying the star Sirius
Avestan hymn: The Tishtar Yasht, or Tir Yasht (Yasht 8)
Forms: A youth of fifteen, a golden-horned white bull, and a white horse
Adversary: Apaosha, the demon of drought, who appears as a black horse
Battlefield: Vourukasha, the great cosmic sea
Helped by: Ahura Mazda, who offers sacrifice to strengthen him
Festival: Tiregan, a midsummer rain-festival on the day of Tir
Linked to: The archer Arash and Haurvatat, the Immortal of the waters
Attestation: The Avesta, above all the Tishtar Yasht; later Pahlavi texts
The Star of Rain
Tishtrya is the divine being of the star Sirius, the brightest star in the night sky, whose rising at the start of summer the ancient Iranians watched as the sign of the coming rains. As the yazata of rainfall and fertility, he is the guardian of the waters that fall from heaven, and he is closely bound to the work of Haurvatat, the Bounteous Immortal who watches over the waters of the world. Without Tishtrya, the fields wither; with him, they drink and grow.
His worship is very old. The Tishtar Yasht, the eighth of the great Avestan hymns, is devoted to his praise, and his name reaches back into the shared Indo-Iranian past, with a cognate in the star-name Tishya of ancient India. In the long memory of the Iranic peoples, the bright summer star and the rain it heralded were gathered into a single shining figure, watched for and prayed to in the dry months when the whole land waited for water.
The Three Forms
One of the most striking features of Tishtrya is that he appears in three successive forms, each an image of strength and renewal. First he comes as a vigorous youth of fifteen, bright-eyed and full of energy; then as a great white bull with horns of gold, an emblem of fertility and abundance; and finally, most famously, as a magnificent white horse with ears and tail of gold, who gallops across the sky toward the cosmic sea. This shapeshifting recalls the many forms of the victory-god Verethragna, with whom Tishtrya shares the forms of the youth, the bull and the horse.
It is as the radiant white horse that Tishtrya rides into his great battle. He races toward Vourukasha, the vast mythical sea that holds the waters of the world, intending to draw up its waters and send them as rain across the earth. But the way is not clear, for the powers of drought are waiting to stop him, and the fate of the rains hangs on the combat to come.
The Battle with Apaosha
At the sea Tishtrya is met by his great enemy, Apaosha, the demon of drought, whose very name means something like the un-thriving, the withering. Against the shining white horse with its golden trappings, Apaosha rises as a horror in the same shape but reversed: a hideous black horse, black of ear and black of tail, the image of the scorched and lifeless land. The two charge together, and the struggle for the waters of the world begins.
They fight at the edge of the cosmic sea for three days and three nights, and to the dismay of all the world, Apaosha begins to win. The reason, the hymn tells, is a bitter one: Tishtrya has been weakened because human beings failed to honour him as they should, neglecting the prayers and offerings that give the gods their strength. Drained of power for want of devotion, the rain-star is driven back, and the demon of drought drives him from the field. The rains do not come, and the earth begins to die.
The Sacrifice and the Rains
Beaten and despairing, Tishtrya cries out to Ahura Mazda, the Wise Lord, lamenting that he has been left weak because mortals did not give him his due of worship. And here the story turns on a remarkable act: the supreme God himself offers sacrifice to his own servant, pouring divine strength into the failing star. Renewed and made mighty, Tishtrya returns to the sea at noon and falls upon Apaosha once more, and this time he conquers, driving the demon of drought away in defeat.
With the victory won, the waters of Vourukasha rise into the heavens, and Tishtrya looses the rains to fall freely upon the parched fields and pastures of the world, while he scatters too the pairikas, the witches of drought who streak the sky as falling stars. The land drinks and lives again. The lesson the hymn draws is clear and deep: the order of the world is not maintained by the gods alone, but by gods and humankind together, and the prayers and offerings of ordinary people are part of the very force that keeps the rains coming and the world alive.
Tishtrya and the Waters
Tishtrya does not work alone. In the Zoroastrian vision he is the chief of the stars that bring the waters, leading a great company of heavenly bodies, among them the star Satavaesa, in the work of gathering the rains and sending them out across the seven regions of the earth. And he stands beside the other powers of the waters, above all Anahita, the lady of the rivers and springs, in the single great task of watering the living world.
In this he reflects one of the deepest values of the Iranic faith: the holiness of water. In a land where rain could mean the difference between abundance and famine, the divinity who secured the waters was no minor figure but a guardian of life itself, and the falling of the rain was felt as a sacred gift, a victory renewed each year over the ever-threatening power of the drought.
The Festival of Tiregan
Tishtrya is honoured at one of the great surviving festivals of the ancient Iranic world, Tiregan, celebrated at the height of summer on the day of Tir. Standing in the calendar alongside the spring feast of Newroz and the autumn feast of Mehregan, Tiregan is a joyful festival of water and rain, a prayer in the form of celebration that the dry season may break and the rains return.
Its customs are full of water and colour. People splash and sprinkle water on one another, a practice called Ab-Pashi, in token of the longed-for rain; the young tie rainbow-coloured bands on their wrists, wear them for some days, and then cast them into a running stream or to the wind, sending their wishes away to be fulfilled. There is dancing, the reciting of poetry, and the sharing of traditional foods. In all of it the ancient hope endures, that the rain-star will triumph again over the drought and the world will be renewed.
The Star and the Archer: Arash
Woven into the festival of Tir is another and very different legend, that of Arash the Archer. The link is partly in the name, for Tir means arrow in Persian, and partly in the ancient hymn itself, which likens the swift flight of Tishtrya toward the cosmic sea to the flight of a supernatural arrow shot by the great archer Arash. The two strands, the rain-star and the hero-archer, have long been celebrated together. The legend belongs to the same epic world as the Shahnameh, the age of the long war between Iran and Turan.
In the tale, to end that war a border is to be fixed by a single arrow: wherever it falls will divide the two lands. The noble Arash is chosen, and though he knows the effort will cost him his life, he climbs Mount Damavand at dawn and looses the arrow with all his strength and his very life-force. It flies from dawn until dusk and falls at last by a far-off river, setting a just border and bringing peace, while Arash himself, spent utterly, falls dead upon the mountain. His selfless sacrifice for his people has made him one of the most beloved heroes of the Iranic world, and his story, like Tishtrya's, is a tale of life given so that others may flourish.
Symbolism
At its heart the myth of Tishtrya is the eternal struggle of life against death, of water against the withering drought, of good against evil, played out in the most vital of all natural events for an ancient farming people: the coming of the rain. The shining white horse and the hideous black one are the two faces of the year itself, fertility and barrenness, and the victory of the bright over the dark is the victory the whole world depends upon.
But the deepest note of the story is its vision of a cooperative cosmos. Tishtrya fails when he is not honoured, and triumphs only when strength is given to him, even the Wise Lord stooping to sacrifice for his servant. The message is that no one, not even a god, stands alone, and that the prayers and good deeds of ordinary people genuinely matter, helping to turn the great wheel of the seasons and to keep the rains, and the world, alive.
Tishtrya and the Kurds
As one of the great divinities of the ancient Iranic world, Tishtrya belongs to the shared heritage of all the Iranic peoples, the Kurds among them. The reverence for water and for sacred springs that fills his myth runs deep in Kurdish culture too, and the great Iranic festivals of the seasons, of which his Tiregan is one, are part of the same ancient cycle that gave the Kurds their cherished Newroz. The longing for rain in a dry land, and the joy when it comes, are feelings the mountain peoples of Kurdistan have always known.
As always with this shared inheritance, it would be wrong to claim Tishtrya as uniquely Kurdish. He is the common treasure of a whole family of Iranic nations, Persians, Kurds and others alike, and of the Zoroastrian faith that gave his myth its fullest form. The Kurds may rightly count this radiant star of the rains among the legends of their wider world, a memory of the time when the whole turning of the year was a sacred story.
Debates and Misconceptions
Is Tishtrya a god? Not an independent one. He is a yazata, one of the many holy beings who serve the one supreme God, Ahura Mazda, and his every victory is understood as a victory of the Wise Lord's good creation. The very heart of his myth, in which Ahura Mazda must strengthen him, makes clear that Tishtrya is a servant and instrument of the divine, not a rival to it.
Is the rain-myth the same as the legend of Arash? They are two distinct strands that the festival of Tir has long celebrated together. One is the cosmic battle of the rain-star against the drought; the other is the human legend of the archer who gave his life to set a just border. They are linked by the word Tir, meaning arrow, and by the old hymn's own comparison of Tishtrya's flight to a flying arrow, but they began as separate stories.
Is the tale Persian or Kurdish? Like the rest of this heritage, Tishtrya belongs to all the Iranic peoples in common. His myth flourished in the Zoroastrian faith of ancient Iran, yet it is the shared inheritance of Persians, Kurds and their neighbours alike. He is best understood not as the property of one nation but as part of a treasure held by a whole family of peoples.
Related Topics
Anahita: the lady of the waters, Tishtrya's companion in watering the world
Mithra: the lord of the covenant and the light, another great yazata
Verethragna: the yazata of victory, who shares Tishtrya's shapeshifting forms
Ahura Mazda: the Wise Lord, who sacrifices to strengthen the rain-star
The Amesha Spentas: the Bounteous Immortals, including Haurvatat of the waters
The Faravahar: the winged emblem of the Zoroastrian faith
Frequently Asked Questions
Who is Tishtrya?
Tishtrya is the Zoroastrian yazata of rain, who personifies the star Sirius. He is famous for the cosmic battle in which, as a white horse, he defeats Apaosha, the demon of drought, and frees the rains to fall upon the earth.
What are the three forms of Tishtrya?
In the Tishtar Yasht he appears in turn as a vigorous youth of fifteen, a great white bull with golden horns, and finally a radiant white horse with golden ears and tail, the form in which he rides to battle for the waters.
Who is Apaosha?
Apaosha is the demon of drought, the great enemy of Tishtrya, whose name means the un-thriving or withering. In the myth he appears as a terrifying black horse and at first defeats the rain-star, until Tishtrya is strengthened and conquers him.
Why was Tishtrya defeated at first?
Because human beings had neglected to honour him with prayers and offerings, which the myth says give the gods their strength. Only after Ahura Mazda himself offers sacrifice to him does Tishtrya regain his power and win.
What is the festival of Tiregan?
Tiregan is an ancient midsummer Iranic festival honouring Tishtrya, celebrated with water-splashing, the tying of rainbow wristbands later cast into streams, dancing and poetry. It is one of the great surviving feasts, alongside Newroz and Mehregan.
How is Tishtrya linked to Arash the Archer?
The festival of Tir blends the rain-star myth with the legend of Arash, the archer who gave his life to set a just border with a single arrow. They are linked by the word Tir, meaning arrow, and by the old hymn's comparison of Tishtrya's flight to a flying arrow.
References and Further Reading
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