Śatapatha Brāhmaṇa ("of a hundred paths") 6.7.2.4

6.7.2.4

atha śikyapāśam pratimuñcate | viśvā rūpāṇi pratimuñcatekavirityasau vā ādityaḥ kavirviśvā rūpā śikyam prāsāvīdbhadraṃ dvipade catuṣpada ityudyanvā eṣa dvipade catuṣpade ca bhadram prasauti vi nākamakhyatsavitā vareṇya iti svargo vai loko nākastameṣa udyannevānuvipaśyanyanu prayāṇamuṣaso virājatītyuṣā vā agre vyucati tasyā eṣa vyuṣṭiṃ virājannanūdeti

He then puts round his (neck) the sling of the netting, with (Vâg. S. XII, 3; Rik S. V, 81, 2), 'The wise putteth on all forms,'--the wise one, doubtless, is yonder sun, and the netting is all forms;--'he hath brought forth what is good for the two-footed and four-footed,'--for in rising he does bring forth what is good for the two-footed and four-footed;--'the adorable Savitri hath glanced over the firmament,'--the firmament, doubtless, is the heaven, and even in rising he looks along it;--'he flasheth forth after the starting of the Dawn,'--for the Dawn shines forth first, and after her shining forth he (the sun) follows, flashing forth.