Three states of the mind: When a jurist looks at the evidence, his mind is in one of three states. Qat' (certainty) means complete conviction, with no real doubt left. Zann (probability) means the mind leans toward one side, but the other side is still possible. Shakk (doubt) means the mind is evenly divided — 50/50 — with no leaning either way.
Certainty is always a proof: Qat' is always a Hujja (a legal proof). It needs no outside permission. If the jurist is genuinely certain of a ruling, he must act on it. For example, we are certain the Quran is the word of Allah, and certain that two plus two equals four.
Probability sometimes counts: Most of the jurist's evidence produces Zann, not Qat'. Some Zann is accepted as proof — Zann Mu'tabar — such as a reliable single report (Khabar Wahid) from a trustworthy narrator. Other Zann is not accepted, such as guessing by analogy (Qiyas) or acting on a dream.
Doubt is never a proof: Shakk is never a Hujja. You cannot build a ruling on pure uncertainty. There are three kinds of doubt: doubt about the ruling itself ("Is this act forbidden at all?"), doubt about the case ("Is this meat properly slaughtered?"), and doubt about whether you did it right ("Did I perform Wudu correctly?"). Each kind leads to a different practical principle, covered in the next topic.
Example
You look out of the window and see rain falling — that is Qat'. You hear a neighbour say it might rain later — that is Zann. You wake up and cannot tell from the grey sky whether it rained in the night — that is Shakk. Each state calls for a different response.
Key Terms
- Qat' (قطع) — certainty; complete conviction with no real doubt
- Zann (ظن) — probability; the mind leans to one side but the other remains possible
- Shakk (شک) — doubt; the mind is evenly divided between two options
- Hujja (حجت) — a legal proof; evidence that authorizes acting on a ruling
Quran or Hadith
Quran 17:36 — "Do not follow that of which you have no knowledge." — to be checked. This verse is the basis for the rule that pure doubt can never be a proof.
Fresh diagram to be drawn: A balance scale with three positions — tipped fully to one side (Qat', 100%), tipped partly (Zann, 70/30), and perfectly level (Shakk, 50/50).
- Qat' is certainty, Zann is probability, Shakk is evenly divided doubt.
- Qat' is always a proof; some Zann (like a reliable single report) is also a proof.
- Shakk is never a proof — a ruling cannot be built on pure uncertainty.
- Doubt can be about the ruling, the case, or whether you performed an act correctly.