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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
abudawud:3653 – ʿAmr b. Marzūq > Shuʿbah > Abū ʿAqīl Hāshim b. Bilāl > Sābiq b. Nājiyah > Abū Salāam

AbuSallam said on the authority of a man who served the Holy Prophet ﷺ that whenever he talked, he repeated it three times.  

أبو داود:٣٦٥٣ – حَدَّثَنَا عَمْرُو بْنُ مَرْزُوقٍ أَخْبَرَنَا شُعْبَةُ عَنْ أَبِي عَقِيلٍ هَاشِمِ بْنِ بِلاَلٍ عَنْ سَابِقِ بْنِ نَاجِيَةَ عَنْ أَبِي سَلاَّمٍ

عَنْ رَجُلٍ خَدَمَ النَّبِيَّ ﷺ أَنَّ النَّبِيَّ ﷺ كَانَ إِذَا حَدَّثَ حَدِيثًا أَعَادَهُ ثَلاَثَ مَرَّاتٍ