Hiranyakeshigrihyasutra 2.6.16.2

2.6.16.2

tadyā paurṇamāsī śravaṇena yuñjyāttasyāmupariṣṭātsāyamagnihotrasya dakṣiṇāgnimupasamādadhātyaupāsanamanāhitāgniḥ \2\

On the day of that full moon which falls under (the Nakshatra) Sravana, after the evening Agnihotra he puts wood on the (third of the three Srauta fires, called the) Dakshinâgni. One who has not set up the (Srauta) fires, (does the same with) the sacred domestic fire.