ii. i. 10.

He who being a bad Brahman desires to drink Soma should offer to the Açvins a dusky (beast) with spots on the forehead; the Açvins were among the gods those who did not drink Soma; they later acquired the drinking of Sonia; the Açvins are the gods of the bad Brahman who desires to drink Soma; verily he has recourse to the Açvins with their own share; verily they give to him the drinking of Soma; the drinking of Soma comes to him. In that it is dusky, verily he drives away the darkness from him. In that it has spots on the forehead [1], verily at the beginning he bestows brilliance on him. He whom men calumniate though he has slain no one should offer a Gayal to Vayu; impure speech comes to him whom men calumniate though he has slain no one; the Gayal is neither a domestic nor a wild animal; he is neither in the village nor the forest whom men calumniate though he has slain no one; Vayu is the purifier of the gods; verily he has recourse to Vayu with his own share; verily he [2] purifies him. The dawn shines away from him and he enters the darkness, the evil, to whom when the litany to the Açvins is being recited the sun becomes not visible; he should offer to Surya (a beast) of many forms; verily he has resort to yonder sun with its own share; verily it drives away the darkness, the evil, from him, the dawn shines upon him, he strikes away the darkness, the evil.