Why “Unrestricted”
The term mursala (free-floating) distinguishes this category from interests that are anchored to textual evidence:
- If the Shari’a explicitly endorses an interest → mu’tabara (recognized) — no controversy
- If the Shari’a explicitly rejects an alleged interest → mulghah (nullified) — not a valid source
- If the Shari’a is silent on whether a particular interest is valid → mursala — the contested category
Classical jurists debated whether it is permissible to derive law from an interest that has no specific textual endorsement.
al-Ghazali’s Three Conditions
Al-Ghazali (d. 1111 CE), in his al-Mustasfa, set strict conditions for maslaha to be a valid source:
- Daruriyya (Necessary): The interest must protect one of the five essential goods — life, intellect, religion, lineage, property
- Qat’iyya (Certain): The interest must be definitively established, not merely probable
- Kulliyya (Universal): The interest must benefit the entire community, not just an individual or group
Under these conditions, the scope of maslaha al-mursala is quite narrow.
al-Tufi’s Radical Position
The Hanbali scholar Najm al-Din al-Tufi argued: maslaha is itself the objective of the Shari’a — and therefore in cases of conflict between a textual ruling and clear public interest (in muamalat, not ‘ibadat), the interest should prevail. This is the most expansive reading of maslaha in classical jurisprudence and has been cited extensively by modern legal reformers.
The mainstream response: al-Tufi’s position threatens the primacy of revelation. Maslaha operates within the Shari’a framework, not above it.
Modern Applications
Contemporary fiqh councils use maslaha al-mursala to ground:
- Organ donation (maslaha of saving life outweighs sanctity of corpse consideration)
- Modern contract forms not envisioned by classical jurists
- Environmental protection laws as Shari’a-derived obligations
See also: Fiqh Al Ijtihad Wa Al Taqlid, Fiqh Al Qiyas, Fiqh Al Ijma, Maqasid Al Shariah, Fiqh Al Madhab Al Maliki