Shatyayanabrahmana 2.8: Bhāradvājagṛhyasūtra · Āgniveśyagṛhyasūtra

2.8

yā evāgnihotre devatās tā aupāsane | ya evāhitāgner dharmaḥ sa eva dharmaḥ | ya evāhitāgner lokaḥ sa evaupāsanikasya

Whichever deities are in the Agnihotra, those very deities are in the Aupāsana [fire]. Whatever is the sacred duty of one who has established the sacred fires, that very [duty] is the sacred duty; whatever is the world of one who has established the sacred fires, that very [world] belongs to the keeper of the Aupāsana fire.

The deities of the fire-offering are those of the domestic fire-offering; the dharma of one who has set up the (śrauta) fires is the same; the world of one who has set up the fires is that of the keeper of the domestic fire.