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Fiqh al-Dayn — Islamic Law of Debt: The Longest Verse in the Quran, Writing Requirements, and the Prohibition of Riba

فِقهُ الدَّين — أَحكَامُ الدَّينِ الإِسلَامِيَّة: أَطوَلُ آيَةٍ فِي القُرآنِ وَاشتِرَاطُ الكِتَابَةِ وَتَحرِيمُ الرِّبَا
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Fiqh al-Dayn (فِقهُ الدَّين — Jurisprudence of Debt; *dayn* means a deferred financial obligation, distinguished from *qardh* — immediate loan) governs how Muslims lend, borrow, document, and discharge debts. The foundational Quranic text is Ayat al-Mudayana (2:282) — the longest single verse in the Quran, sometimes called Ayat al-Dayn — which provides a detailed protocol for debt documentation: write it, have two male witnesses or one male and two female witnesses, do not tire of writing it whether small or large, have the debtor dictate it, protect yourselves with collateral ('aqd al-rahn) if unable to write. The verse's length signals the Quran's concern with financial justice: debt disputes destroy communities. The Prophet said: 'The soul of a believer remains suspended in relation to his debt until it is settled.'

Ayat al-Mudayana: The Debt Verse (2:282)

“O you who believe! When you contract a debt for a specified term, write it down. Let a scribe write it between you justly. No scribe should refuse to write as Allah has taught him. Let him write and let the one who incurs the debt dictate — and let him fear Allah his Lord and not leave anything out of it… And if you are on a journey and cannot find a scribe, then let there be collateral taken…”

The verse is 434 words in Arabic — the longest verse in the Quran. This itself is a signal: the Quran does not spend 434 words on any simple ritual rule. Financial documentation is treated as a matter of profound spiritual and social importance.


The Key Rules of Debt (Dayn)

Documentation: Writing is recommended (mustahabb) by most scholars and obligatory by some. The Prophet said: “When you sell and buy, write it down.” Documentation protects both parties from future dispute.

Witnesses: Two adult male witnesses, or one male and two female witnesses (the female/female pair supporting each other’s memory in case of error). This reflects evidentiary standards, not a statement about women’s credibility — scholars note the Quran’s own explanation: “so that if one of them errs, the other can remind her.”

Collateral (Rahn): When documentation is impractical (traveling, no scribe), collateral is recommended. A pawned item (marhun) transfers possession but not ownership; the pawnbroker cannot use or sell it without default.

No Riba: A debt must be repaid in the exact amount borrowed. Charging more for delayed repayment is riba — prohibited. Voluntary gifts at repayment are permitted but cannot be stipulated.


The Soul’s Suspension

The Prophet: “The soul of the believer is held suspended (mu’allaqa) in relation to his debt until it is discharged.” This hadith — establishing that debt delays the soul’s complete movement after death — made Companions extremely reluctant to die indebted.

See also: Fiqh Al Buyu, Fiqh Al Aqd, Fiqh Al Wasiyyah, Fiqh Al Mawarith, Waqf, Fiqh Al Sadaqa

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