It is narrated from Hazrat Aisha (may Allah be pleased with her) that once a Bedouin came to the service of the Prophet (peace be upon him) and said, "O Messenger of Allah! Do you kiss children? By Allah, we do not kiss them." The Prophet (peace be upon him) said, "I have no power over this matter; when Allah Himself has removed mercy from your heart (then how can I put it in?)."