Numbers 9:6-12

6But there were some men who were unclean because of a human corpse, so they could not observe the Passover on that day. These men came before Moses and Aaron the same day

7and said to him, “We are unclean because of a human corpse. Why should we be excluded from presenting the Lord’s offering at its appointed time with the other Israelites?”

8Moses replied to them, “Wait here until I hear what the Lord commands for you.”

9Then the Lord spoke to Moses:

10“Tell the Israelites: When any one of you or your descendants is unclean because of a corpse or is on a distant journey, he may still observe the Passover to the Lord.

11Such people are to observe it in the second month, on the fourteenth day at twilight. They are to eat the animal with unleavened bread and bitter herbs;

12they may not leave any of it until morning or break any of its bones. They must observe the Passover according to all its statutes.