Śatapatha Brāhmaṇa ("of a hundred paths") 8.7.1.1

8.7.1.1

ṛtavyā upadadhāti | ṛtava ete yadṛtavyā ṛtūnevaitadupadadhāti tadetatsarvaṃ yadṛtavyāḥ saṃvatsaro vā ṛtavyāḥ saṃvatsara idaṃ sarvamidamevaitatsarvamupadadhātyatho prajananametatsaṃvatsaro vā ṛtavyāḥ saṃvatsaraḥ prajananam prajananamevaitadupadadhāti

He lays down two Ritavyâ (seasonal bricks). The seasonal (bricks) are the same as these seasons: it is the seasons he thereby lays down. And, indeed, the seasonal ones are everything here, for the seasonal ones are the year, and the year is everything here: he thus lays down everything here. And generative power they also are,--for the seasonal ones are the year, and the year means generative power: it is generative power he thus lays down (or bestows on Agni and the Sacrificer).