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:3359 – ʿAlī b. Muḥammad b. ʿAbdullāh b. Bishrān> Abū Jaʿfar al-Razzāz > Aḥmad b. al-Walīd al-Faḥḥām > Abū Aḥmad al-Zubayrī > Sufyān > Abū al-Zubayr > Jābir

[Machine] Smiling does not invalidate the prayer, but laughing out loud is what is prohibited and is considered a disruption. This ruling has been stated by Thabit ibn Muhammad al-Zahid and it is a consensus among scholars.  

البيهقي:٣٣٥٩ – أَخْبَرَنَا عَلِيُّ بْنُ مُحَمَّدِ بْنِ عَبْدِ اللهِ بْنِ بِشْرَانَ بِبَغْدَادَ أنبأ أَبُو جَعْفَرٍ الرَّزَّازُ ثنا أَحْمَدُ بْنُ الْوَلِيدِ الْفَحَّامُ ثنا أَبُو أَحْمَدَ الزُّبَيْرِيُّ ثنا سُفْيَانُ عَنْ أَبِي الزُّبَيْرِ عَنْ جَابِرٍ قَالَ

التَّبَسُّمُ لَا يَقْطَعُ الصَّلَاةَ وَلَكِنِ الْقَرْقَرَةُ هَذَا هُوَ الْمَحْفُوظُ مَوْقُوفٌ وَقَدْ رَفَعَهُ ثَابِتُ بْنُ مُحَمَّدٍ الزَّاهِدُ وَهُوَ وَهْمٌ مِنْهُ