Apaosha
Apaosha (, ) is the Avestan language name of Zoroastrianism's demon of drought. He is the epitomized antithesis of Tishtrya, divinity of the star Sirius and guardian of rainfall. In Zoroastrian tradition, Apaosha appears as Aposh or Apaush. For many decades, the Avestan common noun "drought" was thought to derive from either * "burning away" or * "stemming the waters." In the late 1960s, it was proposed that was the antonym of an unattested derivative of * "thriving". This explanation, which is also supported by Old Indic with the same meaning, is today well accepted. Avestan thus originally meant "not thriving". In scripture In the mythology of Yasht 8.21-29, Tishtrya, as a mighty white horse with golden ears and golden tail, rushes towards the cosmic sea Vourukhasha. On his way, he is confronted by Apaosha as a horrible black horse with black ears and black tail. They battle for three days and nights until Apaosha drives Tishtrya away. Tishtrya then complains to Ahura Mazda that he was weakened because humankind did not give him his due of proper prayers and sacrifices. Ahura Mazda then himself offers sacrifice to Tishtrya, who now strengthened reengages Apaosha in battle at noon and conquers