Exodus 29:2-4

Amplified Bible

² and unleavened bread and unleavened cakes mixed with oil, and unleavened wafers spread with oil; you shall make them of fine wheat flour. ³ You shall put them in one basket, and present them in the basket along with the bull and the two rams. ⁴ Then bring Aaron and his sons to the doorway of the Tent of Meeting [out where the basin is] and wash them with water.