Genesis 46:34

46:34 Tell him, ‘Your servants have taken care of cattle from our youth until now, both we and our fathers,’ so that you may live in the land of Goshen, for everyone who takes care of sheep is disgusting to the Egyptians.”

Exodus 8:26

8:26 But Moses said, “That would not be the right thing to do, for the sacrifices we make to the Lord our God would be an abomination to the Egyptians. If we make sacrifices that are an abomination to the Egyptians right before their eyes, will they not stone us?