Shatapatha Brahmana 4.5.9.8

4.5.9.8

atha navame 'hanvyūhati | grahānvyūhanti candāṃsi tadāgrayaṇāgrān gṛhṇāti jāgataṃ vā etannavamamaharbhavatyātmā vā āgrayaṇaḥ sarvaṃ vā idamātmā jagattasmādāgrayaṇāgrān gṛhṇāti

Then, on the ninth day, he transposes the grahas, and they transpose the metres. There he draws the cups beginning with the Âgrayana; for that ninth day belongs to the Gagatî (metre), and the Âgrayana is the self, and the self (soul) is this whole world (gagat): therefore he draws the cups beginning with the Âgrayana.