Numbers 9:6-7

6But there were some men who were 1unclean because of contact with a 2dead person, so that they could not celebrate Passover on that day; and 3they came before Moses and Aaron on that day.

7Those men said to him, “Though we are unclean because of a 4dead person, why are we kept from presenting the offering of the Lord at its appointed time among the sons of Israel?”