Before the beginning of the third oblation, the sacrificer, sitting down behind the Âhavanîya altar, and looking towards the north, sings the Sâman, addressed to the Âdityas and Visve Devas:

In plain words: Before the third and final offering of the day, the worshipper sits behind the main fire altar, faces north, and sings a chant. It is for the Adityas (sun gods) and the Visve Devas (all the gods together).