Corrosion of the Heart 0
Hadhrat Abu Hurairah (رضى الله تعالى عنه) narrates that Rasulullah (sallallahu صلى الله عليه وسلم) said: When the Mu’min sins, a black spot forms on his heart. If he makes istighfaar and taubah, the black mark is removed and his heart is purified. If he increases his sin, the black mark increases