Sahih al-Bukhari

Sahih al-Bukhari 120

(What is said regarding) the memorization of (religious) knowledge
Arabic hadith text
حَدَّثَنَا إِسْمَاعِيلُ، قَالَ حَدَّثَنِي أَخِي، عَنِ ابْنِ أَبِي ذِئْبٍ، عَنْ سَعِيدٍ الْمَقْبُرِيِّ، عَنْ أَبِي هُرَيْرَةَ، قَالَحَفِظْتُ مِنْ رَسُولِ اللَّهِ صلى الله عليه وسلم وِعَاءَيْنِ، فَأَمَّا أَحَدُهُمَا فَبَثَثْتُهُ، وَأَمَّا الآخَرُ فَلَوْ بَثَثْتُهُ قُطِعَ هَذَا الْبُلْعُومُ‏.‏
Translation
Narrated Abu Huraira

I have memorized two kinds of knowledge from Allah's Messenger (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).