Exodus 30:17 WEB

¹⁵  The rich shall not give more, and the poor shall not give less, than the half shekel, when they give the offering of Yahweh, to make atonement for your souls.

¹⁶  You shall take the atonement money from the children of Israel, and shall appoint it for the service of the tent of meeting; that it may be a memorial for the children of Israel before Yahweh, to make atonement for your souls.'

¹⁷  Yahweh spoke to Moses, saying,

¹⁸  'You shall also make a basin of brass, and the base of it of brass, in which to wash. You shall put it between the tent of meeting and the altar, and you shall put water in it.

¹⁹  Aaron and his sons shall wash their hands and their feet in it.