Agnipurana 4.2

4.2

devair gatvā stuto viṣṇur yajñarūpo varāhakaḥ /
abhūt, taṃ dānavaṃ hatvā daityaiḥ sākañca kaṇṭakam(2) //

When the gods approached and praised [him], Viṣṇu became the Boar, the personification of sacrifice;
having slain that Dānava, a thorn together with the Daityas,