Leviticus 3:2

Context
3:2 He must lay his hand on the head of his offering and slaughter it at the entrance of the Meeting Tent, and the sons of Aaron, the priests, must splash the blood against the altar’s sides. ¹ 

Leviticus 3:8

Context
3:8 He must lay his hand on the head of his offering and slaughter it before the Meeting Tent, and the sons of Aaron must splash ²  its blood against the altar’s sides.

Leviticus 3:13

Context
3:13 lay his hand on its head, and slaughter it before the Meeting Tent, and the sons of Aaron must splash its blood against the altar’s sides.