Numbers 33:38

And Moses stripped Aaron of his garments and put them on his son Eleazar, and Aaron died there on the mountain top. Then Moses and Eleazar came down from the mountain.

Now it happened, in the fortieth year, on the first day of the eleventh month, Moses spoke to the children of Israel, according to all that Yahweh had commanded him to give to them,

(Now the sons of Israel set out from Beeroth Bene-jaakan to Moserah. There Aaron died, and there he was buried, and Eleazar his son ministered as priest in his place.