No communal offerings require leaning, except the bull which comes for any of the commandments and the he-goat designated to be sent [to Azazel]. R’ Shimon says: Even the he-goats for idolatry. All offerings of individuals require leaning, except for the bechor-offering, the maaseroffering, and the pesach-offering. An heir performs leaning, and brings libations, and makes a temurah exchange.