Hadith 5594
Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates: The Prophet (peace and blessings of Allah be upon him) kissed Sayyiduna Imam Hasan bin Ali (may Allah be pleased with him). At that time, Aqra’ bin Habis Tamimi was also sitting there. Aqra’ said: I have ten children. I have never kissed any of them. The Prophet (peace and blessings of Allah be upon him) said: Whoever does not show mercy will not be shown mercy.
Hadith 5595
Sayyidah Aisha Siddiqa (may Allah be pleased with her) narrates: A Bedouin came to the service of the Prophet Muhammad (peace be upon him) and said: Do you people kiss children? We do not kiss them. The Prophet Muhammad (peace be upon him) said: If Allah the Exalted has removed mercy from your heart, then what can I do for you?