Leviticus 17:11-14 New Revised Standard Version (NRSV)
11 For the life of the flesh is in the blood; and I have given it to you for making atonement for your lives on the altar; for, as life, it is the blood that makes atonement. 12 Therefore I have said to the people of Israel: No person among you shall eat blood, nor shall any alien who resides among you eat blood. 13 And anyone of the people of Israel, or of the aliens who reside among them, who hunts down an animal or bird that may be eaten shall pour out its blood and cover it with earth.
14 For the life of every creature—its blood is its life; therefore I have said to the people of Israel: You shall not eat the blood of any creature, for the life of every creature is its blood; whoever eats it shall be cut off.