Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
suyuti:24889a
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السيوطي:٢٤٨٨٩a

"لا تَسُبُّوا مَوْتَاكُمْ، فَإِنَّهُ لا يَحِلُّ سَبُّهُمْ".  

[طب] الطبرانى في الكبير عن ابن عمر

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Collected by Ṭabarānī
tabarani:13605Abū Shuʿayb al-Ḥarrānī > Yaḥyá b. ʿAbdullāh al-Bābluttī > Ayyūb b. Nahīk al-Ḥalabī > ʿAṭāʾ b. Abū Rabāḥ > ʿAbdullāh b. ʿUmar > Nabī Allāh ﷺ

[Machine] I heard the Prophet of Allah ﷺ saying, "Do not curse your deceased, for it is not permissible to curse them."  

الطبراني:١٣٦٠٥حَدَّثَنَا أَبُو شُعَيْبٍ الْحَرَّانِيُّ ثنا يَحْيَى بْنُ عَبْدِ اللهِ الْبَابْلُتِّيُّ ثنا أَيُّوبُ بْنُ نَهِيكٍ الْحَلَبِيُّ قَالَ سَمِعْتُ عَطَاءَ بْنَ أَبِي رَبَاحٍ يَقُولُ سَمِعْتُ عَبْدَ اللهِ بْنَ عُمَرَ يَقُولِ

سَمِعْتُ نَبِيَّ اللهِ ﷺ يَقُولُ «لَا تَسُبُّوا أَمْوَاتَكُمْ فَإِنَّهُ لَا يَحِلُّ سَبُّهُمْ»