Taittiriyabrahmana 3.10.9.8

3.10.9.8

átha yád ā́ha /
pavítraṃ pavayiṣyánt sáhasvānt sáhīyān aruṇò 'ruṇárajā íti /
eṣá evá tát /
eṣá hy èvá te 'rdhamāsā́ḥ /
eṣá mā́sāḥ //
átha yád āha /
agniṣṭomá ukthyò 'gnír ṛtúḥ prajā́patiḥ saṃvatsará íti /
eṣá evá tát /
eṣá hy èvá té yajñakratávaḥ /
eṣá ṛtávaḥ /

Then when he says:
"Purifier, intending to purify, powerful, most powerful, ruddy, ruddy-dusted,"
that is just this.
For he is indeed those half-months;
he is the months.
Then when he says:
"Agniṣṭoma, Ukthya, fire, season, Prajāpati, year,"
that is just this.
For he is indeed those sacrificial rites;
he is the seasons;