What is the difference between a major sin (kabirah) and a minor sin (saghirah)?

Islamic scholars generally divide sins into kaba'ir (major) and sagha'ir (minor). A major sin is one that carries an explicit warning of punishment in the Quran or Sunnah, involves a severe legal penalty, invites Allah's curse or anger, or was described by the Prophet as among the gravest wrongs — things like shirk, murder, consuming another's wealth unjustly, abandoning prayer, or major sexual sins. A minor sin is a slip that lacks these markers — a harsh word, a wasted moment, a small lie without serious harm. The distinction matters because of how forgiveness works: Allah promises that if believers avoid the major sins, He will erase their minor ones simply through ordinary righteous living — prayer, good deeds, honest effort — 'If you avoid the major sins which you are forbidden, We will remove from you your lesser sins' (4:31). Scholars also note minor sins can become major through persistence or by being treated lightly, since heedless repetition, not just size, is what hardens a heart (53:32).

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