Śatapatha Brāhmaṇa ("of a hundred paths") 8.2.3.11

8.2.3.11

kṣatraṃ vaya iti | prajāpatirvai kṣatraṃ sa vayo 'bhavanmayaṃdaṃ canda iti yadvā aniruktaṃ tanmayaṃdamanirukto vai prajāpatiḥ prajāpatireva cando 'bhavat

'The Kshatra is vigour,'--the Kshatra, doubtless, is Pragâpati, it is he that became vigour;--'the pleasure-giving metre,'--what is undefined that is pleasure-giving; and Pragâpati is undefined, and Pragâpati indeed became a metre.