Śatapatha Brāhmaṇa ("of a hundred paths") 10.2.4.8

10.2.4.8

saptavidho vā agre prajāpatirasṛjyata sa etamekaśatadhātmānaṃ vihitamapaśyatprāṇabhṛtsu pañcāśadiṣṭakāḥ pañcāśadyajūṃṣi tacataṃ sādanaṃ ca sūdadohāścaika=\atatame tatsamānaṃ sādayitvā hi sūdadohasādhivadati sa etenaikaśatavidhenātmanemāṃ jitimajayadimāṃ vyaṣṭiṃ vyāśnuta tathaivaitadyajamāna etenaikaśatavidhenātmanemāṃ jitiṃ jayatīmāṃ vyaṣṭiṃ vyaśnuta evamu saptavidha ekaśatavidhamabhisampadyate sa ya evaikaśatavidhaḥ sa saptavidho yaḥ saptavidhaḥ sa ekaśatavidha iti nu vidhānam

Sevenfold, indeed, Pragâpati was created in the beginning. He saw this body composed of a hundred and one parts--fifty bricks in the Prânabhrits, and fifty sacrificial formulas, that makes a hundred, and the 'settling' and sûdadohas-formula are the two one hundred and first--these two are one and the same, for when he has 'settled' (a brick), he pronounces the sûdadohas-formula over it: by means of this one hundred and one-fold body he gained that conquest and obtained that success; and in like manner does the Sacrificer, by means of this one hundred and one-fold body, gain that conquest and obtain that success. And thus, indeed, the sevenfold (altar) passes into the one hundred and one-fold: that which is a hundred and one-fold is sevenfold, and that which is sevenfold is a hundred and one-fold. So much as to the forms (of altars).