Deuteronomy 21:12

21:12 you may bring her back to your house. She must shave her head, ¹  trim her nails,

Deuteronomy 23:11

23:11 When evening arrives he must wash himself with water and then at sunset he may reenter the camp.

[21:12]  ¹ sn This requirement for the woman to shave her head may symbolize the putting away of the old life and customs in preparation for being numbered among the people of the Lord. The same is true for the two following requirements.