Shatapatha Brahmana 4.5.1.12

4.5.1.12

atho ye dīrghasattramāsīran | saṃvatsaraṃ vā bhūyo vā ta enāḥ sarvā ālabherantsarvaṃ vai teṣāmāptam bhavati sarvaṃ jitaṃ ye dīrghasattramāsate saṃvatsaraṃ vā bhūyo vā sarvametā evameva yathāpūrvam

And those who perform a long sacrificial session, for a year or more, they will slaughter all these;--indeed everything is obtained, everything conquered by those who perform a long sacrificial session, for a year or more: those (cows) are everything, (when offered) thus in the proper order.