Musnad Ahmad Hadith 23757

Abdul Hameed bin Salamah says that his grandfather had accepted Islam during the time of the Prophet, but his grandmother had not accepted Islam. His grandfather had a son from his grandmother. Both of them brought the case regarding the son to the service of the Prophet Muhammad (peace be upon him). The Prophet Muhammad (peace be upon him) said, "If you both consider it appropriate, give your son the choice (to go with whomever he wishes)." Then the Prophet Muhammad (peace be upon him) seated the father in one corner and the mother in another corner and gave the child the choice. The child started walking towards the mother, so the Prophet Muhammad (peace be upon him) prayed, "O Allah! Grant guidance to this child." Thus, the child returned to his father.