رِيَاضُ الصَّالِحِينَ
Riyad as-Salihin 227
The Book of Miscellany
Reverence towards the Sanctity of the Muslims
وَعَنْ جَرِيرِ بْنِ عَبْدُ اللَّهِ رَضِيَ اللَّه عَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّه عَلَيْهِ وَسَلَّمَ مَنْ لاَ يَرْحَمِ النَّاسَ لاَ يَرْحَمْهُ اللَّهُ ((مُتَّفَقٌ عَلَيْهِ)) .
Jarir bin 'Abdullah (May Allah bepleased with him) reported: Messenger of Allah (ﷺ) said, "He who is not merciful to people Allah will not be merciful to him." [Al-Bukhari and Muslim].
Riyad as-Salihin, 227