Leviticus 1:13

but he shall wash the entrails and the legs with water. Then the priest shall bring it all and burn it on the altar; it is a burnt sacrifice, an offering made by fire, a sweet aroma to the LORD.

Surrounding context

1:12 And he shall cut it into its pieces, with its head and its fat; and the priest shall lay them in order on the wood that is on the fire upon the altar;

1:13 but he shall wash the entrails and the legs with water. Then the priest shall bring it all and burn it on the altar; it is a burnt sacrifice, an offering made by fire, a sweet aroma to the LORD.

1:14 "And if the burnt sacrifice of his offering to the LORD is of birds, then he shall bring his offering of turtledoves or young pigeons.

Translation and sources