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.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
suyuti:2002a –
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السيوطي:٢٠٠٢a –

"إذا سَمِعْتُمْ بجَبلٍ زالِ عَنْ مَكانه فَصَدِّقوا، وإذا سَمِعْتُمْ بِرجُلٍ زال عن خُلُقِه فلا تُصدِّقوا؛ فإنَّه يَصِيرُ إِلى ما جُبِلَ علْيهِ" .  

[حم] أحمد عن أبي الدرداء وصُحح

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Collected by Aḥmad
ahmad:27499 – And Hb b. Jarīr from my father > Yūnus > al-Zuhrī > Abū al-Dardāʾ

[Machine] "While we were with the Messenger of Allah ﷺ, discussing future events, he said: 'When you hear about a mountain moving from its place, believe in it. And when you hear about a person changing his character, do not believe in him, as he will eventually revert to his original state.'"  

أحمد:٢٧٤٩٩ – حَدَّثَنَا وَهْبُ بْنُ جَرِيرٍ قَالَ حَدَّثَنَا أَبِي قَالَ سَمِعْتُ يُونُسَ يُحَدِّثُ عَنِ الزُّهْرِيِّ أَنَّ أَبَا الدَّرْدَاءِ قَالَ

بَيْنَمَا نَحْنُ عِنْدَ رَسُولِ اللهِ ﷺ نَتَذَاكَرُ مَا يَكُونُ إِذْ قَالَ رَسُولُ اللهِ ﷺ إِذَا سَمِعْتُمْ بِجَبَلٍ زَالَ عَنْ مَكَانِهِ فَصَدِّقُوا وَإِذَا سَمِعْتُمْ بِرَجُلٍ تَغَيَّرَ عَنْ خُلُقِهِ فَلَا تُصَدِّقُوا بِهِ وَإِنَّهُ يَصِيرُ إِلَى مَا جُبِلَ عَلَيْهِ