فِقهُ الاستِصلَاح — المَصلَحَةُ المُرسَلَةُ مَصدَرًا لِلفِقهِ الإِسلَامِيّ: كَيفَ صَنَّفَ الإِمَامُ الغَزَالِيُّ المَصلَحَةَ وَلِمَاذَا يَعتَمِدُ المَذهَبُ المَالِكِيُّ المَصلَحَةَ غَيرَ المُستَنَدَةِ إِلَى نَصٍّ وَالتَّطبِيقُ الحَدِيثُ عَلَى تَنظِيمِ التَّمويلِ الإِسلَامِيّ
Fiqh al-Istislah (فِقهُ الاستِصلَاح — Jurisprudence of Public Interest; *istislah* from *s-l-h*: to become good/sound; the use of *maslaha mursala* [unrestricted public interest] as a source of Islamic legal rulings; maslaha = an action that produces benefit [salah] and prevents harm; types of maslaha [al-Ghazali's classification in *al-Mustasfa*]: [1] mu'tabara [attested]: interests explicitly recognized or affirmed by the Quran/Sunna — these are the basis of regular qiyas; [2] mulghah [rejected]: interests that the Quran/Sunna explicitly override — e.g., it might seem 'beneficial' to allow riba for economic development, but the text explicitly prohibits it; [3] mursala [unattested/unrestricted]: interests that are neither explicitly affirmed nor explicitly rejected by the texts — where the jurist must use judgment about whether they align with the overall objectives of the sharia [maqasid al-sharia]; the five protected objectives [al-kulliyyat al-khamsa]: din [religion], nafs [life], nasl [progeny], aql [intellect], and mal [property]; a maslaha mursala is valid if it: [1] is genuine and real, not speculative; [2] is universal [kulliyya], not particular; [3] does not contradict an explicit text; the Maliki school uses maslaha mursala extensively — it was the basis for Companion decisions like Abu Bakr's compilation of the Quran [no explicit text commanded this, but it served the universal interest of preserving religion]; Shafi'i and Hanafi positions: more restrictive — they prefer maslaha to be supported by some textual analogy; modern applications: Islamic banking regulations, environmental protections under Islamic law, public health measures in fiqh; al-Shatibi's *al-Muwafaqat* — the most systematic classical treatment of maqasid theory) is the methodology that allows Islamic law to address situations the classical texts did not explicitly anticipate.
The Five Protected Objectives
The concept of maslaha in Islamic law is anchored in the five objectives (maqasid) that Islamic law is designed to protect:
- Din (Religion): Protecting people’s ability to practice and maintain their faith — laws against apostasy coercion, protection of religious minorities under Islamic governance
- Nafs (Life): Protecting physical life — laws against murder, requiring self-defense when necessary
- Nasl (Progeny): Protecting family lineage and the ability to reproduce and raise children — laws on marriage, prohibition of zina
- Aql (Intellect): Protecting the mind — laws against intoxicants that impair reason
- Mal (Property): Protecting economic life — laws against theft, fraud, riba
A maslaha mursala (unattested public interest) is a potential action that would advance one or more of these five objectives, without being explicitly mentioned in the texts.
The Quran Compilation Example
The clearest example: when the Prophet died, the Quran had not been compiled into a single written book. It was preserved in the memories of hundreds of Companions and written on scattered materials. After the Battle of Yamama (633 CE), many hafiz (Quran memorizers) were killed in a single battle.
Abu Bakr, advised by Umar, ordered the compilation of the Quran into a single document. There is no Quranic verse or hadith explicitly commanding this. It was a decision based on maslaha mursala — the universal interest of preserving the religion (hifz al-din) justified an unprecedented action.
The Maliki school regards this Companion precedent as establishing maslaha mursala as a valid source.
Modern Islamic Finance Regulation
National regulators and Islamic finance standards bodies (AAOIFI, IFSB) routinely use maslaha logic to address financial instruments and products the classical texts could not have anticipated. A cryptocurrency shariah certification, a sukuk structure using digital assets, or a fintech product is evaluated partly by: does it serve or harm the protected interests?
See also: Fiqh Al Istihsan, Fiqh Al Musharakah, Fiqh Al Gharar, Fiqh Al Waqf, Fiqh Al Takaful Al Islami