Hadith on Rights: Whoever benefits himself at the expense of another’s rights will be punished in Hellfire

Al-Mustawrid reported: The Prophet, peace and blessings be upon him, said, “Whoever eats a meal at the expense of a Muslim, then Allah will feed him a like amount of Hellfire. Whoever clothes himself at the expense of a Muslim, then Allah will clothe him with a like amount of Hellfire. Whoever gains a position at the expense of a man and for the sake of showing off, then Allah will place him among the show-offs on the Day of Resurrection.

Source: Al-Adab Al-Mufrad 240

Grade: Hasan (fair) according to Al-Bukhari

عَنِ الْمُسْتَوْرِدِ عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ‏ مَنْ أَكَلَ بِمُسْلِمٍ أُكْلَةً فَإِنَّ اللَّهَ يُطْعِمُهُ مِثْلَهَا مِنْ جَهَنَّمَ وَمَنْ كُسِيَ بِرَجُلٍ مُسْلِمٍ فَإِنَّ اللَّهَ عَزَّ وَجَلَّ يَكْسُوهُ مِنْ جَهَنَّمَ وَمَنْ قَامَ بِرَجُلٍ مَقَامَ رِيَاءٍ وَسُمْعَةٍ فَإِنَّ اللَّهَ يَقُومُ بِهِ مَقَامَ رِيَاءٍ وَسُمْعَةٍ يَوْمَ الْقِيَامَةِ

240 الأدب المفرد البخاري بَابُ الْمُسْلِمُ مَرْآةُ أَخِيهِ