Kauṣītaki (Śāṅkhāyana) Brāhmaṇa 29.8.1

29.8.1

stoma atiśaṃsam prātaḥ savaneṣu śastvā ahīna sūktāni madhyaṃdineṣu śaṃsanti caturviṃśe abhijit viṣuvati bṛhat pṛṣṭhe viśvajiti mahāvratīye ahan / (soma: hotraka śastrāṇi(mādhyaṃdina savanam))

Having recited beyond the stoma at the morning pressings, they recite ahīna hymns at the midday [pressings] on the twenty-fourth [day], the Abhijit, the Viṣuvant, the Bṛhat-pṛṣṭha, the Viśvajit, and the Mahāvrata day.