Sayyiduna Abdullah bin Amr bin al-As (may Allah be pleased with him) narrates that the Messenger of Allah (peace and blessings be upon him) said: "A Muslim is the one from whose tongue and hand other Muslims are safe."
Hadith Referenceسنن دارمي / من كتاب الرقاق / 2751
Hadith Gradingتحقیق (حسین سلیم أسد الدارانی):إسناده صحيح والحديث متفق عليه، [مكتبه الشامله نمبر: 2758]
Hadith Takhrijاس روایت کی سند صحیح اور حدیث متفق علیہ ہے۔ دیکھئے: [بخاري 10] ، [مسلم 40] ، [ابن حبان 196] ، [الحميدي 606]
Brief Explanation
(Commentary on Hadith 2750)
The tongue has been given precedence over the hand because it moves constantly like a pair of scissors, and its strikes come first. The turn of the hand comes later, as it is said: «جراحات اللسان لها التيام . . . . . ولا يلتام ما جرح اللسان» That is, the wounds caused by spears heal, but the wounds inflicted by the tongue do not heal for a long time.
And the restriction of «مَنْسَلِمَالْمُسْلِمُوْنَ» does not mean that it is permissible to harm non-Muslims with the tongue or hand.
In another narration, it is stated: «مَنْأَمِنَهُالنَّاسُ» — that is, from whom all people remain safe, in which the teaching is to deal well and with good character with every human being solely on the basis of the human relationship.
The root of the word Islam is "silm," which means peacemaking, goodwill, and reconciliation.
Causing harm with the tongue includes backbiting, cursing, abusive speech, and all such habits; and causing harm with the hand includes theft, robbery, beating, murder, and bloodshed. Thus, the perfect person is one who has complete control over his tongue and his hand, and neither his tongue opens nor his hand is raised to harm any human being.