Leviticus 6:18-20

New Revised Standard Version, Anglicised Catholic Edition

¹⁸ Every male among the descendants of Aaron shall eat of it, as their perpetual due throughout your generations, from the Lord’s offerings by fire; anything that touches them shall become holy.

¹⁹ The Lord spoke to Moses, saying: ²⁰ This is the offering that Aaron and his sons shall offer to the Lord on the day when he is anointed: one-tenth of an ephah of choice flour as a regular offering, half of it in the morning and half in the evening.