YV 2.7g

From expiration and inspiration are they separated of whom when consecrated one dies, Mitra and Varuna are expiration and inspiration; verily at the commencement they grasp expiration and inspiration. He should draw the Açvina cup first who is infirm. The Açvins are of the gods those who are infirm, late as it were came they to the front. The Açvins are the gods of him who is infirm; they lead him to the front. He who desires support having attained prosperity should draw the Çukra Cup first. The Çukra is yonder sun, this is the end; a man when he has reached the end [2] of prosperity stops; verily from the end he grasps the end, and becomes not worse. He who practises witchcraft should draw the Manthin cup first. The Manthin vessel is a vessel of misfortune; verily he causes death to seize on him; swiftly does he reach misfortune. He should draw the Agrayana cup first whose father and grandfather are holy, and who yet does not possess holiness. From speech and power is he separated whose father and grandfather are holy [3], and who yet does not possess holiness. The Agrayana (cup) is the breast as it were and the speech as it were of the sacrifice; verily with speech and with power he unites him, then he becomes not worse. He against whom witchcraft is practised should draw the Ukthya cup first. The Ukthya vessel is the power of all vessels; verily he yokes him with all power. He should take as Puroruc (the verse) 'O Sarasvati, lead us to prosperity.' Sarasvati is speech [4]; verily with speech he yokes him. 'May we go not through thee to joyless fields', he says. The joyless fields are those of death; verily he goes not to the fields of death. He should draw full cups for one who is ill. Pain afflicts the breaths of him who is ill, the cups are breaths; verily he frees his breaths from pain, and even if his life is gone, yet he lives. He should draw full cups if rain does not fall.