Shatapatha Brahmana 10.3.2.13

10.3.2.13

kiṃ candaḥ kā devatonātiriktānīti nyūnākṣarā canda āpo devatonātiriktāni saiṣātmavidyaivaitanmayo haivaitā devatā etamātmānamabhisambhavati na hātrānyā lokyatāyā āśīrasti

'What metre and what deity are the defective and redundant parts?' The metre (of the verse) wanting a syllable (or syllables) and that deity, the waters, are the defective and redundant parts. This, then, is the knowledge of the body (of the altar), and suchlike is the deity that enters into this body; and, indeed, there is in this (sacrificial performance) no other prayer for the obtainment of heavenly bliss.