Why do some people continue committing sins without feeling any guilt, while others are deeply affected after a single mistake?

In this powerful Islamic reminder, Ustadh Abdulrahman Hassan explains one of the greatest spiritual dangers facing every believer: the gradual hardening of the heart through persistent sin.

The Prophet Muhammad ﷺ taught that when a person commits a sin, a black spot appears upon the heart. If they sincerely repent, stop the sin and seek Allah’s forgiveness, the heart is cleansed. But if they continue committing sins without repentance, the black spots increase until they begin to cover and harden the heart.

At first, a sin may bring guilt, regret and even tears. But when the same wrongdoing is repeated, it can gradually become easier. What once disturbed the heart can become a habit, and what became a h ...