Leviticus 8:21
And he washed the inwards and the legs in water; and Moses burnt the whole ram upon the altar: it was a burnt sacrifice for a sweet savour, and an offering made by fire unto the Lord; as the Lord commanded Moses.
Cross-references
Leviticus 1:9 prescribes washing entrails and legs for a burnt offering; here Moses follows the same procedure for the ordination ram.
In Leviticus 9:14, Aaron repeats the same washing and burning of entrails and legs as Moses did here — identical action.
Genesis 8:21 is the first 'pleasing aroma' from Noah's sacrifice, establishing the pattern of God's favorable response.
Exodus 29:18 prescribes the same consecration ram with identical wording; this verse fulfills that command.
Ephesians 5:2 uses 'fragrant offering' to describe Christ's sacrifice, seeing the OT burnt offering as a type.
Exodus 29:17 gives the command to cut and wash the ram's pieces, which Moses carries out here.
Ezekiel 40:38 mentions washing burnt offerings in the temple chambers — a later echo of this practice.