“Say: Oh my servants, who have transgressed against their own souls! Do not despair of the mercy of Allah; surely Allah forgives all sins; surely He is the All-Forgiving and the Most Merciful. And turn to your Lord and submit to him before the punishment comes to you; thereafter you shall not be helped.”
(The Holy Quran, 39:53-54)
As established by divine verses, traditions of the infallibles and sound intellect, repentance is necessary for every believer after committing any sin. In fact, one should hasten to it and grab the opportunity to do so before the time expires by death, or the blackening of the heart and it being sealed due to the great number of sins. If the believer then returns again to the sin, then he should return again to repentance, as the door of repentance is open and never closed. Therefore, one should beware of despondence and despair from the mercy of Almighty Allah, as this is amongst the strongest means of Satan to take control over a servant of Allah and drag him to annihilation.
In order to ensure that one’s repentance is sincere, two main conditions should be fulfilled:
(1) Regret and remorse in committing the sin.
(1) Resolution and determination to never commit it again.
Furthermore, if the sin consists of infringing the rights of others, it is obligatory to hasten in amending the damage or conciliating with him, as far as possible. If it is not possible, he must resort to seeking forgiveness from Allah.