Sunan an-Nasa'i 4999
سنن النسائي#4999Sahihأَخْبَرَنَا سَعِيدُ بْنُ يَحْيَى بْنِ سَعِيدٍ الأُمَوِيُّ، عَنْ أَبِيهِ، قَالَ حَدَّثَنَا أَبُو بُرْدَةَ، - وَهُوَ بُرَيْدُ بْنُ عَبْدِ اللَّهِ بْنِ أَبِي بُرْدَةَ - عَنْ أَبِي بُرْدَةَ، عَنْ أَبِي مُوسَى، قَالَ قُلْنَا يَا رَسُولَ اللَّهِ أَىُّ الإِسْلاَمِ أَفْضَلُ قَالَ " مَنْ سَلِمَ الْمُسْلِمُونَ مِنْ لِسَانِهِ وَيَدِهِ " .
It was narrated that Abu Musa said:"I said: 'O Messenger of Allah, whose Islam is most virtuous?' He said: 'The one from whose tongue and hand the Muslims are safe
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 47:15