John Gill Commentary Leviticus 4:29

"And he shall lay his hand upon the head of the sin-offering, and kill the sin-offering in the place of burnt-offering." — Leviticus 4:29 (ASV)

And he shall lay his hand upon the head of the sin
offering
His right hand, as the Targum of Jonathan; not the priest that shall offer it, but the man that has sinned, that brings it, thereby confessing his sin, and transferring it to the sacrifice:

and slay the sin offering in the place of the burnt offering ;
that is, on the north side of the altar.