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
ahmad:5260 – Wakīʿ > Fuḍayl b. Ghazwān > Nāfiʿ > Ibn ʿUmar

[Machine] The Messenger of Allah ﷺ said, "Whichever man disbelieves in another man, then one of them is a disbeliever."  

أحمد:٥٢٦٠ – حَدَّثَنَا وَكِيعٌ عَنْ فُضَيْلِ بْنِ غَزْوَانَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ أَيُّمَا رَجُلٍ كَفَّرَ رَجُلًا فَأَحَدُهُمَا كَافِرٌ  

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Collected by Aḥmad
ahmad:4745 – Yaʿlá b. ʿUbayd > Fuḍayl / Ibn Ghazwān > Nāfiʿ > Ibn ʿUmar

[Machine] The Messenger of Allah ﷺ said: "Whoever disbelieves in a man, then if he is as he described, then he indeed deserves disbelief. Otherwise, he has falsely accused him of disbelief."  

أحمد:٤٧٤٥ – حَدَّثَنَا يَعْلَى بْنُ عُبَيْدٍ حَدَّثَنَا فُضَيْلٌ يَعْنِي ابْنَ غَزْوَانَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ

قَالَ رَسُولُ اللهِ ﷺ أَيُّمَا رَجُلٍ كَفَّرَرَجُلًا فَإِنْ كَانَ كَمَا قَالَ وَإِلَّا فَقَدْ بَاءَ بِالْكُفْرِ