Verily a person asked the Messenger of Allah (may peace and blessings be upon him) who amongst the Muslims was better. Upon this (the Holy Prophet) remarked: From whose hand and tongue the Muslims are safe. (Using translation from Muslim 40)
يَا رَسُولَ اللهِ أَيُّ الْمُسْلِمِينَ خَيْرٌ؟ قَالَ «مَنْ سَلِمَ الْمُسْلِمُونَ مِنْ لِسَانِهِ وَيَدِهِ»