Keluaran 29:11

29:11 You are to kill the bull before the Lord at the entrance to the tent of meeting

Imamat 3:2

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 

Imamat 3:8

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.

[3:2]  ¹ tn See the remarks on Lev 1:3-5 above for some of the details of translation here.

[3:8]  ² tn See the note on this term at 1:5.