Śatapatha Brāhmaṇa ("of a hundred paths") 9.4.2.24

9.4.2.24

pañcaitā āhutīrjuhoti | pañcacitiko 'gniḥ pañca 'rtavaḥ saṃvatsaraḥ saṃvatsaro 'gniryāvānagniryāvatyasya mātrā tāvataivaināvetatsaṃtanoti saṃdadhāti

These are five oblations he offers, the fire-altar consists of five layers, a year of five seasons, and Agni is the year: as great as Agni is, as great as is his measure, with so much he thus draws together and connects those two.