Leviticus 1:9

1:9 Finally, the one presenting the offering must wash its entrails and its legs in water and the priest must offer all of it up in smoke on the altar – it is a burnt offering, a gift of a soothing aroma to the Lord.

Leviticus 8:21

8:21 but the entrails and the legs he washed with water, and Moses offered the whole ram up in smoke on the altar – it was a burnt offering for a soothing aroma, a gift to the Lord, just as the Lord had commanded Moses.

Hebrews 10:22

10:22 let us draw near with a sincere heart in the assurance that faith brings, because we have had our hearts sprinkled clean from an evil conscience and our bodies washed in pure water.