It does say in Exodus:
“But I know that the king of Egypt will not let you go unless compelled by a mighty hand. So I will stretch out my hand and strike Egypt with all the wonders that I will do in it; after that he will let you go. And I will give this people favor in the sight of the Egyptians; and when you go, you shall not go empty, but each woman shall ask of her neighbor, and any woman who lives in her house, for silver and gold jewelry, and for clothing. You shall put them on your sons and on your daughters. So you shall plunder the Egyptians.” (3:19-22)
The LORD said to Moses, “Yet one plague more I will bring upon Pharaoh and upon Egypt. Afterward he will let you go from here. When he lets you go, he will drive you away completely. Speak now in the hearing of the people, that they ask, every man of his neighbor and every woman of her neighbor, for silver and gold jewelry.” And the LORD gave the people favor in the sight of the Egyptians. Moreover, the man Moses was very great in the land of Egypt, in the sight of Pharaoh’s servants and in the sight of the people. (11:1-3)
The Egyptians were urgent with the people to send them out of the land in haste. For they said, “We shall all be dead.” So the people took their dough before it was leavened, their kneading bowls being bound up in their cloaks on their shoulders. The people of Israel had also done as Moses told them, for they had asked the Egyptians for silver and gold jewelry and for clothing. And the LORD had given the people favor in the sight of the Egyptians, so that they let them have what they asked. Thus they plundered the Egyptians. (Exodus 12:33-36)