Jabir ibn Abdullah reported: The Messenger of Allah, peace and blessings be upon him, said, “Beware of committing oppression, for oppression will be darkness on the Day of Resurrection. Beware of greed, for greed ruined those before you. It caused them to shed their blood and to make lawful what was unlawful to them.”
Source: Ṣaḥīḥ Muslim 2578
Grade: Sahih (authentic) according to Muslim
عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ اتَّقُوا الظُّلْمَ فَإِنَّ الظُّلْمَ ظُلُمَاتٌ يَوْمَ الْقِيَامَةِ وَاتَّقُوا الشُّحَّ فَإِنَّ الشُّحَّ أَهْلَكَ مَنْ كَانَ قَبْلَكُمْ حَمَلَهُمْ عَلَى أَنْ سَفَكُوا دِمَاءَهُمْ وَاسْتَحَلُّوا مَحَارِمَهُمْ
2578 صحيح مسلم كتاب البر والصلة والآداب باب تحريم الظلم