Show mercy to receive Mercy
BUKHARI 5997:
from Abū Hurayrah —
The Messenger of Allah ﷺ kissed al-Hasan b. ʿAli (his grandchild) while al-Aqra b. Habis al-Tamimi was sitting beside him. al-Aqra said, "I have ten children and I have never kissed anyone of them," Messenger of Allah ﷺ cast a look at him and said, "Whoever is not merciful to others will not be shown Mercy ˹by Allah˺."
البخاري ٥٩٩٧:
عن ابو هريره —
قَبَّلَ رَسُولُ اللَّهِ ﷺ الْحَسَنَ بْنَ عَلِيٍّ وَعِنْدَهُ الأَقْرَعُ بْنُ حَابِسٍ التَّمِيمِيُّ جَالِسًا. فَقَالَ الأَقْرَعُ: إِنَّ لِي عَشَرَةً مِنَ الْوَلَدِ مَا قَبَّلْتُ مِنْهُمْ أَحَدًا! فَنَظَرَ إِلَيْهِ رَسُولُ اللَّهِ ﷺ ثُمَّ قَالَ: «مَنْ لاَ يَرْحَمُ لاَ يُرْحَمُ.»