Śatapatha Brāhmaṇa ("of a hundred paths") 5.2.2.17

5.2.2.17

sa vācayati | agnirekākṣareṇa prāṇamudajayattamujjeṣam prajāpatiḥ saptadaśākṣareṇa saptadaśaṃ stomamudajayattamujjeṣamiti tadyadevaitābhiretā devatā udajayaṃstadevaiṣa etābhirujjayati saptadaśa bhavanti saptadaśo vai prajāpatistatprajāpatimujjayati

He makes him say (Vâg. S. IX, 31-34), 'With the (word of) one syllable Agni won the breath: may I win that!-- -- With the (metre of) seventeen syllables Pragâpati won the seventeenfold stoma: may I win that!' whatever those deities won by means of those (formulas), that he now wins by them. There are seventeen (formulas), for Pragâpati is seventeenfold: he thus wins Pragâpati.