Imam Khomeini through his theological works explains the matter as following:
If man is certain and has faith that all the outward and inward worlds are in the presence of the Lord, and that God, the Exalted, is present everywhere and sees everything, in the presence of God and God’s blessings there would be no possibility for committing sins.
He whose Guardian [wali] is God, the Blessed and Exalted, and who is taken by Him out from the darkness never commits another sin, never backbites, never slanders others, and he is never vengeful or envious of his brothers in faith.
His own heart is filled with a feeling of luminosity and he no longer holds the world or what it contains in high esteem, the late founder of the Islamic Republic explained.
As Imam ‘Ali (‘a) said, “If all the world and what it contains were offered to me to cruelly and unjustly take the skin of a grain of barley from the mouth of an ant, I would never accept it.”
But some of you trample over everything, and you backbite the great [scholars] of Islam.
If others speak ill of the grocers and perfume sellers on the street and backbite them, for your part some of you relate unfair things, insult and are impudent toward the scholars of Islam, because you are not firmly grounded in faith and you do not believe in [divine] retribution for your own deeds.
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