John Wesley on Leviticus 12:4

In the blood of her purifying - In her polluted and separated estate; for the word blood or bloods signifies both guilt, and uncleanness, as here and elsewhere. And it is called the blood of her purifying, because by the expulsion or purgation of that blood, which is done by degrees, she is purified. No hallowed thing - She shall not eat any part of the peace - offerings which she or her husband offered, which otherwise she might have done; and, if she be a priest's wife, she shall not eat any of the tythes or first fruits, or part of the hallowed meats, which at other times she together with her husband might eat.