मुखांतं च स्वसूत्रेण कृत्वा होमं समारभेत् । दशैकं वा शतैकं वा सहस्रैकमथापि वा ४६ ।
One should perform the homa (sacrificial fire offering) by tying the sacred thread (yajnopavita) around the mouth and initiate the ritual. This should be done either for ten, one hundred, or even a thousand times, according to one's capacity.