Riyad as-Salihin 338

Translation

'Abdullah bin 'Amr bin Al-'as (May Allah be pleased with them) reported: Messenger of Allah (PBUH) said, "It is one of the gravest sins to abuse one's parents." It was asked (by the people): "O Messenger of Allah, can a man abuse his own parents?" Messenger of Allah (PBUH) said, "He abuses the father of somebody who, in return, abuses the former's father; he then abuses the mother of somebody who, in return, abuses his mother". [Al-Bukhari and Muslim]. Another narration is: Messenger of Allah (PBUH) said, "One of the major sins is to curse one's parents". It was submitted: "O Messenger of Allah! How can a man curse his own parents?" He (PBUH) said, "When someone curses the parents of another man who in return abuses the former's father; and when someone abuses the mother of another man who in return abuses his mother."

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Same hadith, other wordings

• Shahih Muslim 90aمِنَ الْكَبَائِرِ شَتْمُ الرَّجُلِ وَالِدَيْهِ قَالُوا يَا رَسُولَ اللَّهِ هَلْ يَشْتِمُ الرَّجُلُ وَالِدَيْهِ قَالَ نَعَمْ يَسُبُّ أَبَا الرَّجُلِ فَيَسُبُّ أَبَاهُ وَيَسُبُّ أُمَّهُ فَيَسُبُّ أُمَّهُ
• Shahih al-Bukhari 5973إِنَّ مِنْ أَكْبَرِ الْكَبَائِرِ أَنْ يَلْعَنَ الرَّجُلُ وَالِدَيْهِ قِيلَ يَا رَسُولَ اللَّهِ وَكَيْفَ يَلْعَنُ الرَّجُلُ وَالِدَيْهِ قَالَ يَسُبُّ الرَّجُلُ أَبَا الرَّجُلِ فَيَسُبُّ أَبَاهُ وَيَسُبُّ أَمَّهُ