Śatapatha Brāhmaṇa ("of a hundred paths") 14.1.2.5

14.1.2.5

atho vaikaṅkatī prajāpatiryām prathamāmāhutimajuhotsa hutvā yatra nyamṛṣṭa tato vikaṅkataḥ samabhavadyajño vā āhutiryajño vikaṅkato yajñenaivainametatsamardhayati kṛtsnam karoti

Or of Vikaṅkata (Flacourtia sapida) wood; for when Pragâpati performed his first offering, a Vikaṅkata tree sprang forth from that place where, after offering, he cleansed (his hands); now an offering is a sacrifice, and (consequently) the Vikaṅkata is the sacrifice: with the sacrifice he thus supplies and completes it.