Skandapurana 5.181.33

5.181.33

hotavyaṃ havirevātra samāptiṃ yāsyati kratuḥ ..
nānyathā satyamevoktaṃ tavāgre caturānana .. 33 ..

Only when the oblation is offered here will the sacrifice reach completion; / not otherwise. Truly have I spoken before you, O four-faced one.”