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
tabarani:18421 – ʿAlī b. ʿAbd al-ʿAzīz > al-Qāsim b. Umayyah al-Ḥadhhāʾ > Ḥafṣ b. Ghiyāth > Burd b. Sinān > Makḥūl > Wāthilah b. al-Asqaʿ

[Machine] The Messenger of Allah ﷺ said, "Do not show joy at the misfortune of your brother, for Allah may grant him recovery and put you to test."  

الطبراني:١٨٤٢١ – حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ الْعَزِيزِ ثنا الْقَاسِمُ بْنُ أُمَيَّةَ الْحَذَّاءُ ثنا حَفْصُ بْنُ غِيَاثٍ ثنا بُرْدُ بْنُ سِنَانٍ عَنْ مَكْحُولٍ عَنْ وَاثِلَةَ بْنِ الْأَسْقَعِ قَالَ

قَالَ رَسُولُ اللهِ ﷺ «لَا تُظْهِرِ الشَّمَاتَةَ لِأَخِيكَ فَيُعَافِيَهِ اللهُ وَيَبْتَلِيَكَ»  

See similar narrations below:

Collected by Suyūṭī