Musnad Ahmad 512:6

'Abdullah ibn Yazid narrated to us, Musa ibn 'Ali narrated to us, he said: I heard my father saying: It reached me from Suraqah ibn Malik, that he says: That he was told that the Messenger of Allah, peace and blessings of Allah be upon him, said to him: "O Suraqah, shall I not guide you to the greatest charity, or one of the greatest charities?" He said: "Yes, O Messenger of Allah." He said: "Your daughter who has been returned to you, she has no provider other than you."