Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: Aqra’ bin Habis saw the Noble Prophet (peace and blessings be upon him) kissing Sayyiduna Imam Hasan (may Allah be pleased with him) and Sayyiduna Imam Husayn (may Allah be pleased with him), so he said: I have ten children but I have never kissed any one of them. The Noble Prophet (peace and blessings be upon him) said:“He who does not show mercy will not be shown mercy.”