SHAFAQNA – When a sin is committed, the sinner must repent to God and not be content with that sin because being satisfied with a sin is worse than the sin itself and will make the human being fearless of committing sins again and again. It is narrated from Imam Sajjad (AS) who said: Never be happy with a sin you have committed because expressing happiness for the sake of the sin is worse than committing that sin [1].
[1] Kashful Qommah