Faith and Sins

The Prophet (SAWA) said, ‘A sin cannot expel the faithful person from his faith, just as an act of goodness cannot expel an infidel from his faithlessness.

The Prophet (SAWA) said, ‘Whoever sincerely says: ‘There is no god but Allah (La ilaha illallah) will enter Paradise. He was asked, ‘And where does the sincerity of it [i.e. the statement] lie? He said, ‘In guarding it from what Allah has prohibited.

The Prophet (SAWA) said, ‘[The statement] ‘There is no god but Allah will benefit whoever recites it until he depreciates it. And depreciating its right is when sins are openly committed, and they neither prohibit them, nor do they change them.

Imam al-Kazim (AS), when asked about the grave sins and whether they expel one from faith?, replied, ‘Yes. [And when asked about other than grave sins], said, ‘The Prophet (SAWA) said, ‘An adulterer would never commit adultery whilst still a believer and a thief would never steal whilst still a believer.