Exodus 2:7 (KJV)

And the daughter of Pharaoh came down to wash herself at the river; and her maidens walked along by the river’s side; and when she saw the ark among the flags, she sent her maid to fetch it.

And when she had opened it, she saw the child: and, behold, the babe wept. And she had compassion on him, and said, This is one of the Hebrews’ children.

Then said his sister to Pharaoh’s daughter, Shall I go and call to thee a nurse of the Hebrew women, that she may nurse the child for thee?

And Pharaoh’s daughter said to her, Go. And the maid went and called the child’s mother.

And Pharaoh’s daughter said unto her, Take this child away, and nurse it for me, and I will give thee thy wages. And the woman took the child, and nursed it.