Exodus 40:27-31

and he burned fragrant incense on it, just as the Lord had commanded Moses.

Then he set up the curtain for the doorway of the tabernacle.

And he set the altar of burnt offering in front of the doorway of the tabernacle of the tent of meeting, and offered on it the burnt offering and the meal offering, just as the Lord had commanded Moses.

He placed the basin between the tent of meeting and the altar, and put water in it for washing.

From it Moses and Aaron and his sons washed their hands and their feet.