Sa'id bin Abi Rashid (may Allah have mercy on him) narrates that Sayyiduna Ya'la bin Murrah (may Allah be pleased with him) told him that he saw Hasan and Husayn (may Allah be pleased with them both) coming, walking towards the Messenger of Allah (peace and blessings be upon him). When one of them arrived, he (peace and blessings be upon him) put his arm around his neck; then the other came, and he (peace and blessings be upon him) put his other arm around his neck. Then he kissed this one, then kissed that one, then said: "O Allah, I love them both, so love them both. O people, children make a person miserly and cowardly."
Hadith Referenceالمعجم الكبير للطبراني / باب الياء / 18907