The holy Prophet of Islam (S) in a tradition has said...

The holy Prophet of Islam (S) in a tradition has said: “The faith of a servant (of Allah) does not truly straighten unless his heart straightens, and his heart does not straighten unless his tongue straightens.” [^3] It is interesting that in another tradition Imam Sajjad (as) has said: “Every morning everyone’s tongue inquires after other limbs’ health and says: ‘How are you?’ and all of them in reply to the tongue’s affection answer: ‘We are fine, if you let’. Then they add: ‘By Allah!

Be careful of us! Verily we will both get reward because of you and will be punished because of you’.” [^4] There are a lot of traditions in this regard all of which denote the extraordinary importance of the function of the tongue and that its improvement…