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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
bukhari:3607 – Muḥammad b. al-Muthanná > Yaḥyá b. Saʿīd > Ismāʿīl > Qays > Ḥudhayfah

My companions learned (something about) good (through asking the Prophet) while I learned (something about) evil.  

البخاري:٣٦٠٧ – حَدَّثَنِي مُحَمَّدُ بْنُ الْمُثَنَّى قَالَ حَدَّثَنِي يَحْيَى بْنُ سَعِيدٍ عَنْ إِسْمَاعِيلَ حَدَّثَنِي قَيْسٌ عَنْ حُذَيْفَةَ ؓ قَالَ

تَعَلَّمَ أَصْحَابِي الْخَيْرَ وَتَعَلَّمْتُ الشَّرَّ