Dear questioner,
May Allah bless you and increase you in good.
Concentration and Repentance
The conditions of true repentance are the following:
(1.) feel remorse for what they have committed
(2.) cease from the sin
(3.) intend never to return to that sin ever again
[Nawawi, Riyadh al-Salihin]
If the sin involves others’ rights, for example, theft, then the condition for repentance to be sound, they would have to return that wealth to the owner of it.
Remorse is something that a human being feels in the heart. It is a feeling of regret that leads the person to want to change or right that wrong.
A person who loves Allah and magnifies Him, and fears Him, will naturally feel this remorse for the wrong they have committed. This feeling of guilt is for the reason of disobeying Allah. No other reason would be appropriate. Nonetheless, this feeling is still created by Allah and facilitated by Him for the servant to repent. We must therefore ask Allah to grant us true repentance.
If you would like to ponder and reflect on your wrong actions so that you may repent, this would be acceptable. However, you can not delay repentance of sin because you don’t feel you have concentration. In this case, delaying the repentance is itself a sin.
A believer should always be fearful of delaying a sin because they may end up dying before repenting.
May Allah grant you and I true repentance for His sake and success afterward, never to return to that wrong.
[Imam] Yama Niazi
Checked and Approved by Shaykh Faraz Rabbani