The Prophet ﷺ said, "A Muslim is the one who avoids harming Muslims with his tongue and hands. And a Muhajir (emigrant) is the one who gives up (abandons) all what Allah has forbidden." (Using translation from Bukhārī 10)  

قَالَ رَسُولُ اللَّهِ ﷺ «الْمُسْلِمُ مَنْ سَلِمَ الْمُسْلِمُونَ مِنْ لِسَانِهِ وَيَدِهِ»