[Machine] Behind the Messenger of Allah ﷺ and Abu Bakr and Umar, I never heard any of them recite "Bismillahir Rahmanir Raheem" before beginning their recitation.
خَلْفَ رَسُولِ اللهِ ﷺ وَأَبِي بَكْرٍ وَعُمَرَ فَمَا سَمِعْتُ أَحَدًا مِنْهُمْ يَقْرَأُ بِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ وَكَذَلِكَ