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
bayhaqi:12197 – Muḥammad b. al-Ḥusayn b. al-Faḍl > ʿAbdullāh b. Jaʿfar > Yaʿqūb b. Sufyān > Mūsá b. Ismāʿīl > Ḥammād b. Salamah > ʿAmmār b. Abū ʿAmmār

[Machine] This is how knowledge fades away. Today, much knowledge has been buried.  

البيهقي:١٢١٩٧ – وَأَخْبَرَنَا مُحَمَّدُ بْنُ الْحُسَيْنِ بْنِ الْفَضْلِ أنا عَبْدُ اللهِ بْنُ جَعْفَرٍ ثنا يَعْقُوبُ بْنُ سُفْيَانَ ثنا مُوسَى بْنُ إِسْمَاعِيلَ ثنا حَمَّادُ بْنُ سَلَمَةَ عَنْ عَمَّارِ بْنِ أَبِي عَمَّارٍ قَالَ لَمَّا مَاتَ زَيْدُ بْنُ ثَابِتٍ قَعَدْنَا إِلَى ابْنِ عَبَّاسٍ فِي ظِلِّ قَصْرٍ فَقَالَ

هَكَذَا ذَهَابُ الْعِلْمِ لَقَدْ دُفِنَ الْيَوْمَ عِلْمٌ كَثِيرٌ  

See similar narrations below:

Collected by Ḥākim, Ṭabarānī
hakim:5810 – ʿAlī b. Ḥamshādh al-ʿAdl > ʿAlī b. ʿAbd al-ʿAzīz And ʾAbū Muslim > Ḥajjāj b. Minhāl > Ḥammād b. Salamah > ʿAmmār b. Abū ʿAmmār

[Machine] "Such is the disappearance of knowledge. Today, much knowledge has been buried."  

الحاكم:٥٨١٠ – حَدَّثَنَا عَلِيُّ بْنُ حَمْشَاذَ الْعَدْلُ أَنَا عَلِيُّ بْنُ عَبْدِ الْعَزِيزِ وَأَبُو مُسْلِمٍ أَنَّ حَجَّاجَ بْنَ مِنْهَالٍ حَدَّثَهُمْ ثَنَا حَمَّادُ بْنُ سَلَمَةَ عَنْ عَمَّارِ بْنِ أَبِي عَمَّارٍ قَالَ لَمَّا مَاتَ زَيْدُ بْنُ ثَابِتٍ جَلَسْنَا مَعَ ابْنِ عَبَّاسٍ فِي ظِلِّ قَصْرٍ فَقَالَ

«هَكَذَا ذَهَابُ الْعِلْمِ لَقَدْ دُفِنَ الْيَوْمَ عَلْمٌ كَثِيرٌ»  

tabarani:4749 – ʿUbayd b. Ghannām > Abū Bakr b. Abū Shaybah > Wakīʿ > Ḥammād b. Salamah > ʿAmmār b. Abū ʿAmmār

[Machine] Today, many knowledge has been buried.  

الطبراني:٤٧٤٩ – حَدَّثَنَا عُبَيْدُ بْنُ غَنَّامٍ ثنا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ ثنا وَكِيعٌ عَنْ حَمَّادِ بْنِ سَلَمَةَ عَنْ عَمَّارِ بْنِ أَبِي عَمَّارٍ قَالَ جَلَسْنَا مَعَ ابْنِ عَبَّاسٍ فِي جَنَازَةِ زَيْدِ بْنِ ثَابِتٍ فَقَالَ

«لَقَدْ دُفِنَ الْيَوْمَ عَلْمٌ كَثِيرٌ»