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-zuhd:925 – ʿAbdullāh > Muḥammad b. Ḥumayd > Jarīr > al-Fuḍayl b. Ghazwān > ʿAlī b. al-Ḥusayn

[Machine] Whoever laughs a sincere laugh from knowledge.  

الزهد لأحمد:٩٢٥ – حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنَا مُحَمَّدُ بْنُ حُمَيْدٍ حَدَّثَنَا جَرِيرٌ عَنِ الْفُضَيْلِ بْنِ غَزْوَانَ عَنْ عَلِيِّ بْنِ الْحُسَيْنِ قَالَ

مَنْ ضَحِكَ ضَحِكَةً مَجَّ مَجَّةً مِنَ الْعِلْمِ  

See similar narrations below:

Collected by Dārimī
darimi:603 – Muḥammad b. Ḥumayd > Jarīr > al-Fuḍayl b. Ghazwān > ʿAlī b. Ḥusayn Raḥmah Allāh ʿAlayh

[Machine] "Whoever laughs a laughter that is complete and full of knowledge."  

الدارمي:٦٠٣ – أَخْبَرَنَا مُحَمَّدُ بْنُ حُمَيْدٍ حَدَّثَنَا جَرِيرٌ عَنِ الْفُضَيْلِ بْنِ غَزْوَانَ عَنْ عَلِيِّ بْنِ حُسَيْنٍ رَحْمَةُ اللَّهِ عَلَيْهِ قَالَ

«مَنْ ضَحِكَ ضَحْكَةً مَجَّ مَجَّةً مِنَ الْعِلْمِ»