The Problem of Legal Stratagems and Their Refutation

One of the longest and most polemical sections of I'lam al-Muwaqqi'in is Ibn al-Qayyim's comprehensive refutation of legal stratagems (hiyal): devices by which scholars constructed technically valid transactions or arrangements that circumvented the intent of the Shariah while satisfying its formal conditions. The practice of hiyal had a long history in Islamic jurisprudence, particularly in the Hanafi school, where a significant literature of hiyal texts had developed. Ibn al-Qayyim's attack on this literature is thorough, drawing on Quranic principles, hadith evidence, the practice of the Companions, and logical argumentation. He regards hiyal not as a legitimate tool of legal reasoning but as a corruption of the law that is more dangerous than open transgression, because it clothes sin in the garb of scholarship.

The riba example is central to Ibn al-Qayyim's critique. The prohibition of interest (riba) in the Quran and Sunnah is among the most explicit and serious prohibitions in Islamic law; the Quran declares that those who consume riba are at war with Allah and His Messenger. Yet certain jurists had developed contract structures that produced the economic effect of an interest-bearing loan while avoiding the technical definition of riba: for example, a 'double sale' in which a lender sells goods to a borrower at a high deferred price and then buys them back at a lower immediate price, effectively extracting a fixed return on the capital advanced. Ibn al-Qayyim argues that these structures are prohibited not in spite of their technical cleverness but because of it: they demonstrate a deliberate intention to achieve what Allah has prohibited, and intention is precisely what the Shariah evaluates.

Ibn al-Qayyim develops a general principle from this analysis: acts are judged by their intentions and purposes, both in the divine reckoning and in the assessment of legal scholars. This principle, drawn from the famous hadith of Umar ibn al-Khattab on intentions, applies not only to acts of worship but to transactions and social arrangements. A transaction whose purpose is to produce a prohibited outcome is a prohibited transaction, regardless of how its formal elements are structured. This means that the jurist cannot evaluate a contract merely by examining its formal conditions; he must ask what the parties intended to achieve and whether that intended outcome is something the Shariah permits. Ibn al-Qayyim traces this principle through the rulings of the Companions and the major jurists of the early generations, showing that it was well established before the hiyal literature constructed its elaborate circumventions.

The broader target of Ibn al-Qayyim's critique is a conception of legal scholarship that reduces fiqh to a technical game of formal categories, in which the scholar's task is to find arrangements that satisfy the required conditions rather than to serve the purposes for which those conditions were established. He contrasts this with what he regards as the authentic tradition: scholars who understood that their task was to help people live in accordance with the divine law's actual requirements, not to help them achieve prohibited ends by roundabout paths. The legacy of this section has been substantial. Ibn al-Qayyim's arguments against hiyal have been taken up by scholars of Islamic finance and law who seek to distinguish genuine Shariah compliance from formal compliance that masks conventional interest-bearing finance. The question of whether a transaction is substantively permissible or merely formally so remains one of the most contested in contemporary Islamic legal practice.