Abu Musa Al-Ash'ari (May Allah be pleased with him) reported:
I asked the Messenger of Allah (ﷺ): "Who is the most excellent among the Muslims?" He said, "One from whose tongue and hands the other Muslims are secure."[Al-Bukhari and Muslim]. (DE)
App reference (DE): Book 18, Hadith 2 (DE)
Arabic/English book reference (DE): Book 18, Hadith 1512 (DE)