al-Rūm 30:41

Ẓahara'l-fasādu fi'l-barri wa'l-baḥri bimā kasabat aydi'n-nāsi li-yudhīqahum baʿḍa'lladhī ʿamilū laʿallahum yarjiʿūn

"Corruption has appeared on land and at sea — because of what people's hands have earned. So that He may give them a taste of some of what they did; perhaps they will return."

ظَهَرَ — root ظ-ه-ر: to appear, to come out into the open, to strike the surface. Ẓahr — the back, the outer face.

And this is a repetition that can be verified from the text — the root occurs for the third time:

I record this as my own reading, and its ground is this set of three: in the seventh verse the other side was content with a knowledge that stayed outside. In the forty-first verse what breaks out to the surface is a corruption. The same root: in the one, being stuck at the surface that is seen; in the other, reading what has come out to the surface. The sūra uses "what appears" twice in contrary values.

فَسَاد — root ف-س-د: a thing's going out of its own order, its spoiling. The opposite of ṣalāḥ (being in its right place). The word conveys not a destruction coming from outside but a spoiling from within.

بِمَا كَسَبَتْ أَيْدِى ٱلنَّاسِ — "because of what people's hands have earned".

The construct must be recorded, and it carries two details:

One. The cause is plainly attached to man — and the word aydī (hands) gives a concrete picture: the work that is done.

Two. The same construct had occurred in the thirty-sixth verse as well: bimā qaddamat aydīhim. The difference between the two verses: there there was a pronoun (aydīhim — their hands), here there is a noun (aydi'n-nās — people's hands). That is, the scope opens out from a particular group to all people.

بَعْضَ ٱلَّذِى عَمِلُوا۟ — "some of what they did". It must be recorded: not all of it.

I record this as an observation: the verse does not give the full requital, and it says so itself. And the clause of purpose completes this: laʿallahum yarjiʿūn — perhaps they will return. That is, the outcome is set down not as a verdict but as a warning.

The same structure was treated at al-Sajda 32/21 (wa la-nudhīqannahum mina'l-ʿadhābi'l-adnā dūna'l-ʿadhābi'l-akbari laʿallahum yarjiʿūn) and it was recorded there that "the lesser one is not an end but a call". The two verses share the same verb (adhāqa — to give a taste), the same note of partiality and the same clause of purpose. This is an overlap between the two sūras that can be verified.

Per the method (Method) I write the boundary first: I draw from this verse no contemporary environmental policy, no scientific thesis and no concrete agenda. The verse makes a diagnosis; it does not give a programme. And the word fasād is not used in the Qurʾān only for physical spoiling — it is used for moral and social spoiling as well. To narrow the word to a single field would be to narrow the scope of the text.

More than one explanation of the scope of fasād is transmitted in the classical commentaries:

All three explanations are transmitted; I do not impose a preference.

And I frame what this says to the present with the note that it is one point of view, and without forcing:

There are three elements in the sentence structure of the verse that can be verified: (a) the corruption is on land and at sea — that is, in two fields at once; (b) the cause is what is earned by human hands; (c) the outcome is the return to man of some of what he did.

These three elements give a frame that can be read in every situation where the work a person does comes back to him. I record this as a point of view, not as a finding. The verse names no policy, no measurement and no side of today; and neither do I.

The one thing worth recording is where the sentence places the responsibility: bimā kasabat aydi'n-nās. And the principle of the burden treated at Fāṭir 35/18 becomes visible here on the scale of a society: the outcome is entered in the account of the one who does it.