Kaushitakagrihyasutra 3.6.2

3.6.2

kārtikyāṃ paurṇamāsyāṃ revatyāṃ vāśvayujyāṃ ca gavāṃ madhye susamiddhamagniṃ kṛtvājyāhutīrjuhoti iha dhṛtiriha svadhṛtirupasṛjaṃ dharuṇaṃ mātre dharuṇo mātaraṃ dhayan \ rāyaspoṣamiṣamūrjamasmāsu dīdharat svāhā pūṣā gā anvetu naḥ iti pauṣṇasya \2\

On the full moon of the month Kārttika or under Revatī or on the full moon of the month Āśvayuja, having kindled the fire well in the midst of the cows, he offers oblations of clarified butter with: 'Here is stability, here is self-stability; the suckling is released to the mother, the suckling suckling the mother; / may he sustain in us abundance of wealth, food, and vigor, svāhā!' [and] with 'May Pūṣan follow our cows' of the hymn to Pūṣan.