Albert Barnes Commentary Leviticus 1:5

"And he shall kill the bullock before Jehovah: and Aaron`s sons, the priests, shall present the blood, and sprinkle the blood round about upon the altar that is at the door of the tent of meeting." — Leviticus 1:5 (ASV)

And he shall kill the bullock — Tradition states that before the laying on of the hand, the victim was bound by a cord to a ring on the north side of the altar; as the words of the prayer were ended, the throat was cut and the blood received into a bowl held by an assistant.

Sprinkle the blood — Rather, throw the blood, so as to make the liquid cover a considerable surface. (The Christian significance of this typical action is referred to in Hebrews 12:24; 1 Peter 1:2.)

By the door of the tabernacle — At the entrance of the tent.