The Prophet ﷺ said:
الْمُسْلِمُ مَنْ سَلِمَ الْمُسْلِمُونَ مِنْ لِسَانِهِ وَيَدِهِ (Sahih al-Bukhari: 10)
Translation: A Muslim is one from whose tongue and hand other Muslims are safe.
This is an example of mashhūr Hadith. Its classification concerns narrator numbers: three or more in every generation, while remaining below the threshold of tawātur.