Exodus 30:19

30:19 and Aaron and his sons must wash their hands and their feet from it.

Exodus 39:27

39:27 They made tunics of fine linen – the work of a weaver, for Aaron and for his sons –

Exodus 40:14

40:14 You are to bring his sons and clothe them with tunics

Exodus 40:31

40:31 Moses and Aaron and his sons would wash their hands and their feet from it.