[Machine] I stood behind Abu Bakr, Umar ibn Al-Khattab, and Uthman, and all of them did not recite "In the name of Allah, the Most Gracious, the Most Merciful" when starting the prayer, like this.
قُمْتُ وَرَاءَ أَبِي بَكْرٍ وَعُمَرَ بْنِ الْخَطَّابِ وَعُثْمَانَ ؓ فَكُلُّهُمْ كَانَ لَا يَقْرَأُ {بِسْمِ اللهِ الرَّحْمَنِ الرَّحِيمِ} إِذَا افْتَتَحَ الصَّلَاةَ كَذَا