Numbers 31:19
And do ye abide without the camp seven days: whosoever has killed any person, and whosoever has touched any slain, purify yourselves and your captives on the third day, and on the seventh day.
ā The Restored Word Bible
Context
17 Now therefore kill every male among the little ones, and kill every woman that has known man by lying with him.
18 But all the women children, that have not known a man by lying with him, keep alive for yourselves.
19 And do ye abide without the camp seven days: whosoever has killed any person, and whosoever has touched any slain, purify yourselves and your captives on the third day, and on the seventh day.
20 And purify all raiment, and all that is made of skins, and all work of goats' , and all things made of wood.
21 And Eleazar the priest said unto the men of war which went to the battle, This the ordinance of the law which the Yahuah commanded Moses;