Leviticus 8:18

8:18 Then he presented the burnt offering ram and Aaron and his sons laid their hands on the head of the ram,

Leviticus 19:21

19:21 He must bring his guilt offering to the Lord at the entrance of the Meeting Tent, a guilt offering ram, ¹ 

[19:21]  ¹ sn On the guilt offering see the note on Lev 5:15 above.