Numbers 9:7

4 And Moses spake unto the children of Israel, that they should keep the passover.

5 And they kept the passover in the first [month], on the fourteenth day of the month, at even, in the wilderness of Sinai: according to all that Jehovah commanded Moses, so did the children of Israel.

6 And there were certain men, who were unclean by reason of the dead body of a man, so that they could not keep the passover on that day: and they came before Moses and before Aaron on that day:

7 and those men said unto him, We are unclean by reason of the dead body of a man: wherefore are we kept back, that we may not offer the oblation of Jehovah in its appointed season among the children of Israel?

8 And Moses said unto them, Stay ye, that I may hear what Jehovah will command concerning you.

9 And Jehovah spake unto Moses, saying,

10 Speak unto the children of Israel, saying, If any man of you or of your generations shall be unclean by reason of a dead body, or be on a journey afar off, yet he shall keep the passover unto Jehovah.