Genesis 43:32

43:32 They set a place for him, a separate place for his brothers, and another for the Egyptians who were eating with him. (The Egyptians are not able to eat with Hebrews, for the Egyptians think it is disgusting to do so.)

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?