Leviticus 7:29-31

7:29 “Tell the Israelites, ‘The one who presents his peace offering sacrifice to the Lord must bring his offering to the Lord from his peace offering sacrifice. 7:30 With his own hands he must bring the Lord’s gifts. He must bring the fat with the breast to wave the breast as a wave offering before the Lord, 7:31 and the priest must offer the fat up in smoke on the altar, but the breast will belong to Aaron and his sons.

Leviticus 8:28

8:28 Moses then took them from their palms and offered them up in smoke on the altar on top of the burnt offering – they were an ordination offering for a soothing aroma; it was a gift to the Lord.

Psalms 99:6

99:6 Moses and Aaron were among his priests;

Samuel was one of those who prayed to him.

They prayed to the Lord and he answered them.