Śatapatha Brāhmaṇa ("of a hundred paths") 1.9.3.20

1.9.3.20

atha putrasya nāma gṛhṇāti | idam me 'yaṃ vīryam putro 'nusaṃtanavaditi yadi putro na syādapyātmana eva nāma gṛhṇīyāt

He then turns (from left to right), with the text (Vâg. S. II, 27 b), 'I move along the course of the sun:' having reached that final goal, that safe resort, he now moves along the course of that (sun).