Numbers 9:6-10

6But some of them could not celebrate the Passover on that day because they were ceremonially unclean on account of a dead body. So they came to Moses and Aaron that same day 7and said to Moses, “We have become unclean because of a dead body, but why should we be kept from presenting the Lord’s offering with the other Israelites at the appointed time?” 8Moses answered them, “Wait until I find out what the Lord commands concerning you.” 9Then the Lord said to Moses, 10“Tell the Israelites: ‘When any of you or your descendants are unclean because of a dead body or are away on a journey, they are still to celebrate the Lord’s Passover,