Jaiminīya (Talavakāra) Brāhmaṇa 2.244.p2

2.244.p2

apa eva prathamasya tṛcasya prathamayā stotriyayā jayati bhūmiṃ dvitīyāgniṃ

He wins the waters by the first stoma verse of the first triplet, the earth by the second, [and] fire by the third;