Jaiminīya (Talavakāra) Brāhmaṇa 1.45.p10

1.45.p10

tasya haitasya devasyāhorātre ardhamāsā māsā ṛtavassaṃvatsaro goptā ya eṣa

Of this god who burns yonder, day and night, the half-months, the months, the seasons, the year are the guardians.