How can the repentance of an apostate be accepted, even though verse 90 of Surat Aal Imran states: "Indeed, those who disbelieved after their belief and then increased in disbelief - never will their repentance be accepted, and those are the astray"? And is the repentance of someone who doubted the prophethood of one of the prophets then repented accepted, or of someone who believed that the seven earths were seven layers then realized their error and repented?

The acceptance of a murtadd's (apostate's) repentance between him and Allah is not a matter of dispute among scholars. The noble verses in Surat Aal 'Imran (3:86-91) indicate this, with the exception of those who repented and reformed. The non-acceptance of repentance is specific to those who increased in disbelief and died upon it. Scholars have interpreted "their repentance will not be accepted" to mean non-acceptance at the time of death (Sakarat al-Mawt), or for someone who feigns repentance while concealing disbelief, or for someone who repents from sins but not from polytheism (shirk), or for someone who died upon disbelief. Al-Tabari and Al-Razi affirm that Allah accepts repentance from every sin if its conditions are met.

For someone afflicted with obsessive-compulsive disorder (OCD), the issue lies in their illness, not in matters of Islamic law. Doubting the prophethood of a prophet due to ignorance, or hesitating in defining the meaning of the seven earths, is not disbelief. The person with OCD should treat their illness instead of passing judgment on themselves or others as disbelievers.