Skandapurana 5.183.1

5.183.1

.. .. sūta uvāca .. ..
tṛtīye ca dine prāpte trayodaśyāṃ dvijottamāḥ ..
prātaḥsavanamādāya ṛtvijaḥ sarva eva te ..
svesve karmaṇi saṃlagnā yajñakṛtyasamudbhave .. 1 ..

Sūta said:
When the third day arrived, on the thirteenth lunar day, O best of brahmins,
the sacrificial priests, undertaking the morning pressing of soma, all of them
engaged in their respective duties pertaining to the sacrificial acts.