The Book of Faith
1/14. Chapter:
Clarifying the superiority of Islam, and what part of it is best
Sahih Muslim
وَحَدَّثَنَا أَبُو الطَّاهِرِ، أَحْمَدُ بْنُ عَمْرِو بْنِ عَبْدِ اللَّهِ بْنِ عَمْرِو بْنِ سَرْحٍ الْمِصْرِيُّ أَخْبَرَنَا ابْنُ وَهْبٍ، عَنْ عَمْرِو بْنِ الْحَارِثِ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، عَنْ أَبِي الْخَيْرِ، أَنَّهُ سَمِعَ عَبْدَ اللَّهِ بْنَ عَمْرِو بْنِ الْعَاصِ، يَقُولُ إِنَّ رَجُلاً سَأَلَ رَسُولَ اللَّهِ صلى الله عليه وسلم أَىُّ الْمُسْلِمِينَ خَيْرٌ قَالَ " مَنْ سَلِمَ الْمُسْلِمُونَ مِنْ لِسَانِهِ وَيَدِهِ " .
'Abdullah b. Amr b. al-As is reported to have said: Verily a person asked the Messenger of Allah (may peace and blessings be upon him) who amongst the Muslims was better. Upon this (the Holy Prophet) remarked: From whose hand and tongue the Muslims are safe.
Reference : Sahih Muslim 40In-book reference : Book 1, Hadith 68USC-MSA web (English) reference : Book 1, Hadith 64