"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."
Sunan an-Nasa'i Book 11, Hadith 31
← Previous Hadith "I prayed behind Abu Hurairah and he recited: In the Name of Allah, the Most Gracious, the Most Merciful, then he recited Umm Al-Qur'an (Al Fatihah), and when he reached: not (the way) of those who earned Your anger, nor of those who went astray, he said: 'Amin and the people said 'Amin. And every time he prostrated he said: 'Allahu Akbar and when he stood up from sitting after two Rak'ahs he said: 'Allahu Akbar'. And after he had said the Salam he said: 'By the One in Whose Hand is my soul! My prayer most closely remembers the prayer of the Messenger of Allah.'"

Sunan an-Nasa'i Book 11, Hadith 30 Next Hadith → "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."

Sunan an-Nasa'i Book 11, Hadith 32