Is there a sin that cannot be forgiven? What are the sins that Allah will never forgive? What sins can lead a person to Hell?

Is there a sin that cannot be forgiven? What are the sins that Allah will never forgive? What sins can lead a person to Hell?

Dear Brother / Sister,

There is no sin that cannot be forgiven after repentance. However, we cannot know whether the sin will be forgiven or not. Allah might or might not forgive the sin after repentance. The repentance should have the conditions of veniality. Allah promises that he will accept the repentance if it is done properly.

As for the sins that are not repented, associating partners to Allah (shirk) will never be forgiven. The sins other than shirk can be forgiven.

Some of the major sins are as follows:

To associate partners with Allah, to kill somebody, to slander someone that he/she has fornicated, to commit fornication, to escape from Islamic jihad, to cast a spell, to spend an orphan’s money on one’s own needs, to disobey one’s parents, to commit a sin in the haram region of Makkah, to get and spend interest or usury, to steal, to drink alcohol, to gamble.

If a Muslim commits a major sin, he is not regarded to have exited Islam as a believer unless he despises or ignores it. Ahl as-Sunnah scholars hold the view that a Muslim who commits a major sin will not exit Islam and he will not stay in Hell forever; they say that even if a Muslim dies without repenting, Allah will forgive him out of His generosity; and that if He wishes, He will torture him in Hell  due to His justice. (Sharhu Aqidati't-Tahawiyya p. 370).

The greatest major sin is not to accept Allah and to associate partners with Him in terms of His personality, attributes and deeds. It is called the greatest major sin.

"Allah forgiveth not that partners should be set up with him; but He forgiveth anything, else to whom He pleaseth" (an-Nisa, 4/48).

It is not permissible to despair of the mercy of Allah and to continue committing sins or to commit sins without repenting and without being afraid of His torture. No matter how many sins a believer commits, he should be between fear and hope and he should not turn away from his Lord.

"O my Servants who have transgressed against their souls! Despair not of the Mercy of Allah: for Allah forgives all sins: for He is Oft-Forgiving, Most Merciful “(az-Zumar, 39/53)

"Tell My servants that I am indeed the Oft-forgiving, Most Merciful; And that My Penalty will be indeed the most grievous Penalty." (al-Hijr, I5/50).

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