Numbers 9:6-7

6But there were some people who were not clean. That was because they had touched a dead body. So they could not eat the Passover on that day. So they came to Moses and Aaron on that day.

7And those people said to Moses, ‘We are not clean because of the dead body that we touched. But we would like to bring our gift to the Lord at the proper time with the other Israelites.’