Śatapatha Brāhmaṇa ("of a hundred paths") 9.3.3.5

9.3.3.5

tadvā aṣṭācatvariṃśāditi | anto vā aṣṭācatvāriṃśo yugmatāṃ stomānāmantata eva taccandāṃsi svargaṃ lokamāyaṃstathaivaitadyajamāno 'ntata eva svargaṃ lokameti

This (set runs) up to the forty-eight-versed (hymn-form), for the Ashtâkatvârimsa is the last of the even stomas: at the last the metres thus went up to heaven; and in like manner does the Sacrificer thereby at the last go up to heaven.