Ezekiel 4:12-15

You shall eat your food as barley cakes, having baked it in their sight over human dung.” Then the LORD said, “Thus the children of Israel will eat their bread unclean and defiled among the nations where I will banish them.” [Hos 9:3] But I said, “Ah, Lord GOD! Behold (hear me), I have never been defiled; for from my youth until now I have never eaten what died on its own or was torn by beasts, nor has any unclean meat ever entered my mouth.” [Acts 10:14] Then He said to me, “See, I will let you use cow’s dung instead of human dung over which you shall prepare your food.”