Furwah bin Nawfal narrates from his father that the Prophet Muhammad (peace be upon him) said: Do you want to take your stepdaughter? She is under the guardianship of her stepfather. The narrator states: Then he came to the Prophet Muhammad (peace be upon him), and the Prophet (peace be upon him) asked him the same question. He replied: I have left her with her mother. The Prophet Muhammad (peace be upon him) said: Why have you come? He said: I have come so that you may teach me something which I can recite when I go to sleep. The Prophet Muhammad (peace be upon him) said: You should recite Surah Al-Kafiroon; recite it completely before sleeping, for it is a declaration of disassociation from shirk (polytheism).