In plain terms
Shart
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Shart names something required for an act to count, standing outside the act itself rather than forming one of its essential parts.
What it means for me: Shart tells you what has to be true before or during an act for it to count. Missing one does not mean a part is missing from the act itself, only that a requirement was not met.
Example: A scholar says, 'reaching a set age is a shart for this duty, not a rukn of it.' The listener understands: without it, the duty is not yet binding, though the act itself would have no missing part.
Do not confuse with: Rukn, pillar. A missing rukn means part of the act itself is gone. A missing shart means the act cannot yet take effect, even though its parts are complete.
If scholars differ: Legal theorists commonly divide conditions into three kinds: of obligation, of validity, and of completeness. Jurists can differ on whether a specific requirement is a shart, a rukn, or merely recommended. This distinction is discussed further in know the ruling before you sign.
Related terms
Rukn
Rukn names a part so essential to an act or contract that without it, nothing recognizable as that act exists at all.
Sihhah
Sihhah names an act or contract that met every pillar and condition required, so its intended legal effect applies in full.
Batil
Batil names an act or contract lacking a pillar or condition of its formation, producing no legal effect.
Mani'
Mani' names something that blocks a ruling from applying, even when every other requirement for it has already been met.
Sabab
Sabab names something the law treats as a marker that triggers a ruling once it exists, noticed or not.
Wajib
Wajib names an act classed as obligatory in Islamic law. Leaving it without a valid excuse carries accountability. It sits at one end of a five-part scale: wajib, mustahab…