حَدَّثَنَا مُحَمَّدُ بْنُ يُوسُفَ، قَالَ: حَدَّثَنَا سُفْيَانُ، عَنْ هِشَامٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا
قَالَتْ: جَاءَ أَعْرَابِيٌّ إِلَى النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ: أَتُقَبِّلُونَ صِبْيَانَكُمْ؟ فَمَا نُقَبِّلُهُمْ، فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَوَ أَمْلِكُ لَكَ أَنْ نَزَعَ اللَّهُ مِنْ قَلْبِكَ الرَّحْمَةَ؟»
Aishah said, “A bedouin came to the Prophet (sallallahu alayhi wa sallam), may Allah bless him and grant him peace, and asked, ‘Do you kiss your children? We do not kiss them.’ The Prophet (sallallahu alayhi wa sallam), may Allah bless him and grant him peace, said, ‘Can I put mercy in your hearts after Allah has removed it from them?’”
Al-Adab Al-Mufrad 90, Book 5, Looking after children, Hadith 7. 1 min read