Shatapatha Brahmana 4.1.1.15

4.1.1.15

taccaturviṃśatiṃ kṛtvo 'bhiṣutam bhavati | caturviṃśatirvai saṃvatsarasyārdhamāsāḥ saṃvatsaraḥ prajāpatiḥ prajāpatiryajñaḥ sa yāvāneva yajño yāvatyasya mātrā tāvantamevaitatsaṃ sthāpayati

Thus the pressing amounts to twenty-four times (of beating). Now there are twenty-four half-moons in the year; and Pragâpati (the lord of creatures) is the year, and the sacrifice is Pragâpati: thus as great as the sacrifice is, as great as is its measure, so great he thereby establishes it.