Exodus 40:28-32

And he set up the hanging at the door of the tabernacle.

And he put the altar of burnt offering by the door of the tabernacle of the tent of the congregation, and offered upon it the burnt offering and the meat offering; as the LORD commanded Moses.

And he set the laver between the tent of the congregation and the altar, and put water there, to wash withal.

And Moses and Aaron and his sons washed their hands and their feet thereat:

When they went into the tent of the congregation, and when they came near unto the altar, they washed; as the LORD commanded Moses.