John Gill Commentary Leviticus 3:8

"and he shall lay his hand upon the head of his oblation, and kill it before the tent of meeting: and Aaron`s sons shall sprinkle the blood thereof upon the altar round about." — Leviticus 3:8 (ASV)

And he shall lay his hand upon the head of his offering
The Targum of Jonathan adds here, as before,

``his right hand with strength:''

and kill it before the tabernacle of the congregation ;
in the court, in any part of it; for, as Gersom says, all places were right for this; the man that brought it killed it, or the butcher, as the Targum of Jonathan says here also as on (Leviticus 3:2) :

and Aaron's sons shall sprinkle the blood thereof round about upon the
altar; upon the four horns of it, (See Gill on Leviticus 3:2).