It is narrated from Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) that a man asked the Messenger of Allah (peace and blessings be upon him): "O Messenger of Allah! Who is the best of the Muslims?" He (peace and blessings be upon him) said: "The one from whose tongue and hand people are safe."
Hadith Referenceالمعجم الأوسط / باب الباء / 3170
Hadith Takhrij«أخرجه مسلم فى «صحيحه» برقم: 40، وابن حبان فى «صحيحه» برقم: 400، وأحمد فى «مسنده» برقم: 6868، والطبراني فى «الكبير» برقم: 14730، 14731»