Skandapurana 6.3.48.18

6.3.48.18

śārṅgiṇe sitavarṇāya śaṅkhacakragadābhṛte .
namo vāmanarūpāya yajñarūpāya te namaḥ .. 48.18 ..

To the bow-wielder, of white complexion, bearer of the conch, discus, and mace;
homage to the one whose form is Vāmana, homage to you whose form is the sacrifice!