Numbers 6:7

New American Bible - revised edition

Not even for their father or mother, sister or brother, should they defile themselves, when these die, since their heads bear their dedication to God.

Cross References

Numbers 9:6

There were some, however, who were unclean because of a human corpse and so could not celebrate the Passover that day. These men came up to Moses and Aaron that same day

Ezekiel 44:25

They shall not make themselves unclean by going near a dead body; only for their father, mother, son, daughter, brother, or unmarried sister may they make themselves unclean.

Numbers 6:8

As long as they are nazirites they are holy to the Lord.