(15) باب رَحْمَتِهِ صلى الله عليه وسلم الصِّبْيَانَ وَالْعِيَالَ وَتَوَاضُعِهِ وَفَضْلِ ذَلِكَ
'A'isha (Allah be pleased with her) reported that there came a few desert Arabs to Allah's Messenger (ﷺ) and said:
Do you kiss your children? He said: Yes. Thereupon they said: By Allah but we do not kiss our children. Thereupon Allah's Messenger (ﷺ) said: Then what can I do if Allah has deprived you of mercy? Ibn Numair said: (We has deprived) your heart of mercy.
Reference: Sahih Muslim 2317
In-book reference: Book 43, Hadith 85
USC-MSA web (English) reference(deprecated numbering scheme): Book 30, Hadith 5735