Sahih al-Bukhari 6657
Sahih al-Bukhari · Book 83: Oaths and Vows · "They swear by Allah their strongest oaths that ..."
Narrated Haritha bin Wahb:
حَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى ، حَدَّثَنِي غُنْدَرٌ ، حَدَّثَنَا شُعْبَةُ ، عَنْ مَعْبَدِ بْنِ خَالِدٍ ، سَمِعْتُ حَارِثَةَ بْنَ وَهْبٍ ، قَالَ سَمِعْتُ النَّبِيَّ صلى الله عليه وسلم يَقُولُ " أَلاَ أَدُلُّكُمْ عَلَى أَهْلِ الْجَنَّةِ، كُلُّ ضَعِيفٍ مُتَضَعَّفٍ، لَوْ أَقْسَمَ عَلَى اللَّهِ لأَبَرَّهُ، وَأَهْلِ النَّارِ كُلُّ جَوَّاظٍ عُتُلٍّ مُسْتَكْبِرٍ " .
I heard the Prophet (ﷺ) saying, "Shall I tell you of the people of Paradise? They comprise every poor humble person, and if he swears by Allah to do something, Allah will fulfill it; while the people of the fire comprise every violent, cruel arrogant person."