The Book of Faith (Kitab Al-Iman)

Muslim :: Book 1 : Hadith 64

'Abdullah b. Amr b. al-As is reported to have said: 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.

Source materials are from the University of Southern California MSA site
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