Aitareyabrahmana 3.17

3.17

He recites the pragātha addressed to Brahmaṇaspati. The gods, having Bṛhaspati as their purohita, conquered the heavenly world; they conquered all around in this world. Just so, the sacrificer, having Bṛhaspati as his purohita, conquers the heavenly world; he conquers all around in this world. Indeed, these two pragāthas, although not sung [in the stotra], are recited taking up [the verses] repeatedly. On this they say: 'Since nothing that has not been sung is recited taking up [verses] repeatedly, then why are these two pragāthas, although not sung, recited taking up [verses] repeatedly?' This marutvatīya hymn is the recitation corresponding to the pavamāna chant. Here they chant on six gāyatrī verses, on six bṛhatī verses, and on three triṣṭubh verses; that midday pavamāna chant consists of three metres and fifteen verses. On this they say: 'How is this midday pavamāna chant of three metres and fifteen verses recited after [by the hotṛ]?' The two verses that follow the gāyatrī intro-verse and the gāyatrī follower verse—by these his gāyatrī verses are recited after. By these two pragāthas his bṛhatī verses are recited after. Indeed, on those bṛhatī verses the Sāman-singers chant with the Raurava and Yaudhājaya sāmans, taking up [the verses] repeatedly. Therefore these two pragāthas, although not sung, are recited taking up [the verses] repeatedly, so that the recitation corresponds to the stotra. The two triṣṭubh verses that are the dhāyyā verses and the triṣṭubh nivid insertion hymn—by these his triṣṭubh verses are recited after. Thus indeed this midday pavamāna chant of three metres and fifteen verses is recited after for him who knows thus.