"...who slaughters an ox, a lamb, or a goat inside the camp, or who slaughters outside the camp, but does not bring it to the entrance of the Tent of Meeting to offer up as a sacrifice to G‑d . . . this shall be counted for that man as blood; he has shed blood, and that man shall be cut off"Leviticus 17:3.

It is forbidden to slaughter outside the Holy Temple any animal designated for sacrifice.