al-Mujādala 58:10

Innama'n-najwā mina'sh-shayṭāni li-yaḥzuna'lladhīna āmanū, wa laysa bi-ḍārrihim shayʾan illā bi-idhni'llāh, wa ʿala'llāhi fal-yatawakkali'l-muʾminūn

"That secret talk is only from Satan, in order to grieve those who believe. Yet it cannot harm them at all except by God's leave. Let the believers rely on God alone."

The most striking side of the verse is how it names the purpose of najwā.

What one would expect is doing harm: laying a plan, preparing a trap, getting ready for an attack. The verse does not say these things. The only thing it says is: to grieve.

حُزْن — Root: ح-ز-ن. The concrete sense of the root is hard, broken, stony ground. Al-ḥazn is hard earth that is difficult to walk on (the opposite of sahl, which is soft and level).

From here ḥuzn (grief): the hardening of the terrain within. Its becoming unwalkable. The word describes sorrow not as an emotion but as a deterioration of the ground.

This clarifies the picture the sūra builds. What the whispering does is not to do actual harm to the other side; it is to make his inside unwalkable. A group of people draw aside and talk, and the person left outside does not know what is being said. That unknowing does more work than a real harm: the person produces possibilities in his own mind, and those possibilities work against him.

And the verse names this as a technique: مِنَ ٱلشَّيْطَٰنِ.

One has to think about what this means. The verse does not say that those whispering are Satan; it says that the source of the whispering comes out there. That is, this is the naming of a form of behaviour.

Satan's basic work in the Qurʾān is waswasa — that is, not the giving of information but the dropping in of doubt. This is what is described in Sūrat al-Nās as well: the one who whispers into breasts. And the function of whispering is not to say something untrue but to leave behind something whose truth or untruth cannot be known.

Najwā does exactly the same work. Nothing is said to the person left outside; a door is simply closed and something is spoken behind it. The rest the person produces himself.

The second half of the verse balances the first, and there is a very fine distinction here.

The verse does not deny the grief. It does not say "you will not be grieved"; it says "it is in order to grieve" — that is, the intent is real, and in all likelihood effective. But then: it cannot harm.

That is, two things are separated:

This distinction is both true and useful. A conversation that takes a person as its target can grieve that person — and to be grieved is not a fault. But grief and actual harm are not the same thing. The real effect produced by the whispering group is not so much a real harm as the shadow of an expected harm. The verse separates the shadow from the body.

The note إِلَّا بِإِذْنِ ٱللَّهِ too is not a formula of consolation but a frame: whether the harm comes about or not is not in the hands of the one who plans it. That is, the power of the other side is smaller than it estimates.

Root: و-ك-ل. Wakīl: the person to whom a matter is committed. Tawakkul (Form V, tafaʿʿul): to commit a matter to an agent, to rely on him.

The legal origin of the word matters: wakāla in Arabic is the transfer of the authority to carry out a matter. That is, tawakkul is not an emotional relief but a transfer of authority — the acceptance that the outcome is not in one's own hands.

And it fits this verse exactly: what the whispering group is planning is not known. The only thing that can be done about something unknown is to stop tracking it.

فَلْيَتَوَكَّلِ — a command to the third person with the lām of command: "let them rely". And a point of word order: عَلَى ٱللَّهِ has been brought forward. In Arabic the ordinary order would be fal-yatawakkali'l-muʾminūna ʿala'llāh. The bringing forward conveys restriction (ḥaṣr): "on God alone".

This detail is the very same structure treated in al-Fātiḥa: iyyāka naʿbudu — the object is brought forward and a limitation is established.