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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:120 – Ismāʿīl > Akhī > Ibn Abū Dhiʾb > Saʿīd al-Maqburī > Abū Hurayrah

I have memorized two kinds of knowledge from Messenger of Allah ﷺ . I have propagated one of them to you and if I propagated the second, then my pharynx (throat) would be cut (i.e. killed).  

البخاري:١٢٠ – حَدَّثَنَا إِسْمَاعِيلُ قَالَ حَدَّثَنِي أَخِي عَنِ ابْنِ أَبِي ذِئْبٍ عَنْ سَعِيدٍ الْمَقْبُرِيِّ عَنْ أَبِي هُرَيْرَةَ قَالَ

حَفِظْتُ مِنْ رَسُولِ اللَّهِ ﷺ وِعَاءَيْنِ فَأَمَّا أَحَدُهُمَا فَبَثَثْتُهُ وَأَمَّا الآخَرُ فَلَوْ بَثَثْتُهُ قُطِعَ هَذَا الْبُلْعُومُ