Discover the meaning of the term Al-brhan (برهان) in Islamic vocabulary.
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Updated on 11 April 2026 at 1:05 AM
📖 2 min readIt is the syllogism composed of certain truths, whether immediate, that is, self-evident, or mediate, that is, speculative; and its middle term must be the cause of the major's relation to the minor; if it is also the cause of that relation's existence in the external, it is a burhan limmi, as when we say: this has humors in putrefaction, and all that has humors in putrefaction is feverish, so this is feverish: the humors' putrefaction, cause of the fever's being established in the mind, is likewise cause of its establishment in the external; otherwise it is cause of the relation only in the mind, and it is a burhan inni, as when we say: this is feverish and has humors in putrefaction, so this has humors in putrefaction: the fever, though cause of the humors' putrefaction being established in the mind, is not its cause in the external, but the reverse.
In the Qamus: the proof. With the logicians: the syllogism composed of certain truths, whether immediately self-evident or speculative ending in self-evidence.
In al-Qamus al-Qawim: it is the proof, the decisive evidence; as God Most High says: 'Say: bring your proof, if you are truthful'.
It is the syllogism certain in its composition.
The syllogism composed of certain truths.
It is the syllogism from certain truths, whether immediate, that is, the self-evident, or mediate, that is, the speculative; al-Nasafi said: 'the burhan is an exposition whereby truth appears apart from falsehood'.