Midrash su Genesi 12:20

And Moshe was a shepherd and a gentleman in a fire out of the bush. Rashbi tells what God Almighty discovered from my name and would talk to Moshe out of the bush, what this bush is tougher than any tree in the world and every bird that enters it does not go right out of it but cuts limb organs, so that Egyptian labor is difficult before the place of every slave in the world. A slave or slave Ben Horin never left Egypt but only Hagar said (Genesis 2: 2) and Pharaoh would go on him and send him and his wife and all that he had: Merom and he would talk to Moshe out of the bush as long as Israel was in such trouble

Rabbi Joshua ben Ḳorchah said: Because of his love for her, (Pharaoh) wrote in her marriage document (giving her) all his wealth, whether in silver, or in gold, or in man-servants, or land, and he wrote (giving) her the land of Goshen for a possession. Therefore the children of Israel dwelt in the land of Goshen, in the land of their mother Sarah. He (also) wrote (giving) her Hagar, his daughter from a concubine, as her handmaid. And whence do we know that Hagar was the daughter of Pharaoh? Because it is said, "Now Sarai Abram's wife bare him no children; and she had an handmaid, an Egyptian, whose name was Hagar" (Gen. 16:1). Pharaoh rose up early in the morning confused because he had not approached her, and he sent and called Abraham, and said to him: Behold, Sarai thy wife is before thee, and all the deeds of her marriage contract are with her, take (her) and go, do not tarry in this land, as it is said, "Now therefore behold thy wife, take her, and go" (Gen. 12:19). "And Pharaoh gave men charge concerning him, and they sent him forth" (Gen. 12:20). And he had Abraham led so as to come to the land of Canaan. He sojourned in the land of the Philistines in order to be refreshed there. And he went away. And everything is foreseen by the Holy One, blessed be He, and Abimelech sent and took Sarah, thinking to raise up children from her, as it is said, "And Abimelech… sent, and took Sarah" (Gen. 20:2).