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:541 – ʿAbdullāh > Sūwayd b. Saʿīd > Ibrāhīm b. Saʿd > Ibn Shihābʿan al-Sāʾib b. Yazīd

It was narrated from as-Sa’ib bin Yazeed that ’Uthman ؓ Prostrated in Soorat Sad  

أحمد:٥٤١ – حَدَّثَنَا عَبْدُ اللهِ حَدَّثَنِي سُوَيْدُ بْنُ سَعِيدٍ حَدَّثَنَا إِبْرَاهِيمُ بْنُ سَعْدٍ عَنِ ابْنِ شِهَابٍعَنِ السَّائِبِ بْنِ يَزِيدَ

أَنَّ عُثْمَانَ سَجَدَ فِي (ص)  

See similar narrations below:

Collected by Ṭabarānī
tabarani:11096 – [Chain 1] ʿAmr b. Abū al-Ṭāhir b. al-Sarḥ > Yūsuf b. ʿAdī [Chain 2] Muḥammad b. ʿAbdullāh al-Ḥaḍramī > Abū Bakr b. Abū Shaybah > Muḥammad b. Fuḍayl > Layth > Mujāhid > Ibn ʿAbbās

[Machine] The Prophet ﷺ prostrated in the letter "ص".  

الطبراني:١١٠٩٦ – حَدَّثَنَا عَمْرُو بْنُ أَبِي الطَّاهِرِ بْنِ السَّرْحِ ثنا يُوسُفُ بْنُ عَدِيٍّ ح وَحَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللهِ الْحَضْرَمِيُّ ثنا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ قَالَا ثنا مُحَمَّدُ بْنُ فُضَيْلٍ عَنْ لَيْثٍ عَنْ مُجَاهِدٍ عَنِ ابْنِ عَبَّاسٍ

أَنَّ النَّبِيَّ ﷺ «سَجَدَ فِي ص»