´Ibn Abdullah bin Mughaffal said:` "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."
Related hadith on this topic
Explanation & Benefits
Hafiz Muhammad Ameen
909. Commentary: By not reciting «بِسْمِ اللَّهِ الرَّحْمَنِ الرَّحِيمِ», what is meant is not to recite it aloud, and the narrations that support this are more numerous and more authentic. Therefore, the established practice should be to recite it quietly, because the Rightly Guided Caliphs (radi Allahu anhum) surpassed all the other Companions (radi Allahu anhum) in knowledge of the pauses (waqf) in recitation, especially Abu Bakr and Umar (radi Allahu anhuma). However, it is also permissible to recite it aloud occasionally, as has been mentioned in some narrations.
Source: Sunan Nasa'i: Translation and Benefits by Shaykh Hafiz Muhammad Amin Hafizullah, Page: 909