Sayyidina Abu Hurayrah(RA) narrated Aqra’ ibn Habis (RA) saw the Prophet (SAW) kiss Hasan Ibn Abu Umar said, “Hasan or Husayn.” And he commented, “I have ten children (or Sons), but I do not kiss any one of them.” So, Allah’s Messenger (SAW) said, “Indeed, he who does not dispense mercy is not shown mercy.” [Bukhari 5997]