Abdullah bin Numayr عبد الله بن نمير · The Chapters on Marriage

“The Messenger of Allah said: “Whatever is given as a dowry or gift before the marriage, it belongs to her. Whatever is given after the marriage belongs to the one to whom it was given. And the most deserving matter for which a man is honored is (the marriage of) his daughter or sister.”

"I never felt as jealous of any woman as I did of Khadijah, because I saw how the Messenger of Allah remembered her, and his Lord had told him to give her the glad tidings of a house in Paradise made of Qasab."

the Messenger of Allah ruled that the child belonged to the bed.