Good Manners and Form (Al-Adab)
Ṣaḥīḥ al-Bukhārī 6071
أَلاَ أُخْبِرُكُمْ بِأَهْلِ الْجَنَّةِ، كُلُّ ضَعِيفٍ مُتَضَاعِفٍ، لَوْ أَقْسَمَ عَلَى اللَّهِ لأَبَرَّهُ، أَلاَ أُخْبِرُكُمْ بِأَهْلِ النَّارِ كُلُّ عُتُلٍّ جَوَّاظٍ مُسْتَكْبِرٍ
alā ukhbirukum biʾahli al-jannah, kullu ḍaʿīfin mutaḍāʿifin, law aqsama ʿalā-Llāh lʾabarrah, alā ukhbirukum biʾahli an-nāri kullu ʿutullin jawwāẓin mustakbirin
Transliteration generated from the Arabic vowel marks
The full narration
Narrated Haritha bin Wahb: Al-Khuzai: The Prophet (ﷺ) said, "Shall I inform you about the people of Paradise? They comprise every obscure unimportant humble person, and if he takes Allah's Oath that he will do that thing, Allah will fulfill his oath (by doing that). Shall I inform you about the people of the Fire? They comprise every cruel, violent, proud and conceited person
Source
Ṣaḥīḥ al-Bukhārī · 6071