Leviticus 1:7

1:7 and the sons of Aaron, the priest, must put fire on the altar and arrange wood on the fire.

Leviticus 11:38

11:38 but if water is put on the seed and such a carcass falls on it, it is unclean to you.

Leviticus 15:23

15:23 If there is something on the bed or on the furniture she sits on, when he touches it he will be unclean until evening,