"The Messenger of Allah ﷺ led us in prayer, and we did not hear him recite: In the Name of Allah, the Most Gracious, the Most Merciful. And Abu Bakr and Umar led us in prayer and we did not hear it from them either." (Using translation from Nasāʾī 906)  

«صَلَّى بِنَا رَسُولُ اللهِ ﷺ فَلَمْ يُسْمِعْنَا قِرَاءَةَ بِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ وَصَلَّى بِنَا أَبُو بَكْرٍ وَعُمَرُ فَلَمْ نَسْمَعْهَا مِنْهُمَا»  

"I prayed behind the Messenger of Allah ﷺ, Abu Bakr, Umar and Uthman, may Allah be pleased with them, and I did not hear any of them say out loud: In the Name of Allah, The Most Gracious, The Most Merciful." (Using translation from Nasāʾī 907)  

«صَلَّيْتُ خَلْفَ رَسُولِ اللهِ ﷺ وَأَبِي بَكْرٍ وَعُمَرَ وَعُثْمَانَ فَلَمْ أَسْمَعْ أَحَدًا مِنْهُمْ يَجْهَرُ بِبِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ»  

"If Abdullah bin Mughaffal heard any one of us recite: 'In the Name of Allah, the Most Gracious, the Most Merciful', he would say: 'I prayed behind the Messenger of Allah ﷺ and behind Abu Bakr and behind Umar-may Allah be pleased with them both- and I did not hear any of them recite: 'In the Name of Allah, the Most Gracious, the Most Merciful." (Using translation from Nasāʾī 908)  

سَمِعَ أَحَدًا يَقْرَأُ بِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ يَقُولُ «صَلَّيْتُ خَلْفَ رَسُولِ اللهِ ﷺ وَخَلْفَ أَبِي بَكْرٍ وَخَلْفَ عُمَرَ فَمَا سَمِعْتُ أَحَدًا مِنْهُمْ قَرَأَ بِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ»