"I said: 'O Messenger of Allah, whose Islam is most virtuous?' He said: 'The one from whose tongue and hand the Muslims are safe.'" (Using translation from Nasāʾī 4999)
يَا رَسُولَ اللهِ أَيُّ الْإِسْلَامِ أَفْضَلُ؟ قَالَ مَنْ سَلِمَ النَّاسُ مِنْ لِسَانِهِ وَيَدِهِ