al-Takwīr 81:22

Wa mā ṣāḥibukum bi-majnūn "And your companion is not possessed."

The whole force of the verse is in this word.

The verse does not say "our messenger", does not say "the prophet", and does not give his name. صَاحِبُكُم — "your companion", "the one from among you, who lives with you".

Root: ص-ح-ب. To be together, to keep company, to accompany. Ṣāḥib — a companion; ṣuḥba — companionship; aṣḥāb — those who are together.

And the pronoun: كُم — "your". The verse, that is, appeals to the hearer's own testimony.

This is a way of offering evidence, and it is extremely practical: you know him. He has been among you for forty years. You know how he speaks, how he behaves, how he trades, how he keeps a trust. To tell whether a man is possessed no learning is needed; closeness is enough.

And the verse uses the strongest evidence the hearer has — his own observation — against him.

And the link with ʿAbasa: in ʿAbasa 80/36 the same root was used, in the list of flight, of the wife: wa ṣāḥibatihī. The two sūras use this root in two opposite directions — in one, being together is evidence; in the other, being together dissolves. I record this parallel as my own reading.

Root: ج-ن-ن. This root was treated in the section on al-Baqara 2/25; I do not repeat it here. In summary: the sense of the root is to cover, to conceal, and all its derivatives turn about invisibility — janīn (covered in the womb), jinn (the unseen being), majnūn (whose mind is covered over), mijann (a shield), janna (the garden that covers).

And now attend to what the word meant in that culture.

Majnūn does not coincide exactly with the modern "mentally ill". The form of the word is a passive participle: "struck by a jinn" — that is, one who has come under the influence of a jinn, whose speech comes not from himself but from it.

This changes what the charge is:

• To say "mad" in the modern sense: this man's mind is disordered, what he says is meaningless.
• To say majnūn in that culture: this man's speech is not his own; its source is not where he claims it is.

The accusation, then, is not about soundness of mind but about the source of the speech.

And precisely for this reason the sūra's answer is not the expected answer.

The sūra does not say "he is sane". It does not say "his speech is coherent". Instead:

• 19-21: it recounts who the real carrier is.
• 23: it says that he saw him.
• 25: it says that it is not the speech of a satan.

If the charge is about the source, then, the answer is about the source too. The sūra meets the accusation on its own ground.

It was recorded in the section on al-Inshirāḥ: labels such as majnūn, shāʿir, sāḥir, kāhin are not random insults; they are that culture's standard ways of invalidating a man's speech — classifying the speaker instead of arguing with what is said. al-Takwīr refuses the classification and pulls the argument back to what is said.

A note on the grammar. The construction mā … bi-: the particle of negation + a redundant bāʾ. This bāʾ adds nothing to the meaning; it reinforces. So not "is not" but "is in no way".