Exodus 29:29-30

29:29 “The holy garments that belong to Aaron are to belong to his sons after him, so that they may be anointed in them and consecrated in them. 29:30 The priest who succeeds him from his sons, when he first comes to the tent of meeting to minister in the Holy Place, is to wear them for seven days.

Numbers 20:26-28

20:26 Remove Aaron’s priestly garments and put them on Eleazar his son, and Aaron will be gathered to his ancestors and will die there.”

20:27 So Moses did as the Lord commanded; and they went up Mount Hor in the sight of the whole community. 20:28 And Moses removed Aaron’s garments and put them on his son Eleazar. So Aaron died there on the top of the mountain. And Moses and Eleazar came down from the mountain.