Uncovering the Bedrock: A Primer on Islamic Legal Maxims

Islamic law rests upon a foundation of coherent principles, not upon the arbitrary whims of jurists as some critics have alleged. A distorted image has at times circulated, depicting the Muslim judge as one who "issued arbitrary, irrational, and expedient decisions without respect for general principles of law," and portraying justice in Islamic courts as lacking any "fixed rules of a formally rational law." This portrayal is mistaken, and the sub-field of Islamic legal maxims (al-qawāʿid al-fiqhiyya) offers an accessible way to dismantle it. Unlike detailed treatments of legal theory that demand technical expertise, legal maxims possess an intuitive appeal that quickly reveals the consistent and principled nature of fiqh, disclosing the jurists' commitment to general principles and their aversion to legal absurdity and inconsistency.

A maxim (qāʿida, plural qawāʿid) is a concise phrase capturing a legal principle of broad application. The word literally means "base," or "that upon which something rests," signalling that these principles form the foundation for more specific rulings. Just as human beings intuitively grasp that similar cases should be decided similarly, so too does Islamic law possess maxims that capture the principles animating its rulings. Examples include, "The evidentiary burden rests on the claimant" (al-bayyinatu ʿalā man iddaʿā), and "Necessity renders the impermissible permissible" (al-ḍarūrāt tubīḥ al-maḥẓūrāt).

As to their origins, although the study of qawāʿid as a distinct discipline emerged only centuries after Islam, the principles themselves existed from the birth of Islamic law in the lifetime of the Prophet Muhammad ﷺ. Some maxims are, in fact, verbatim Prophetic ḥadith, such as "The evidentiary burden rests on the claimant" and "There shall be no harm nor any reciprocation of harm." The first known work documenting legal maxims is that of the Ḥanafī jurist Abū al-Ḥasan al-Karkhī (d. 340/952), yet earlier jurists were plainly aware of legal principles. The Kufan jurists assessed opinions by their consistency with analogous cases, as seen in the disputes between Abū Ḥanīfa (d. 150/767) and Ibn Abī Laylā (d. 148/765). A famous debate narrated by al-Shāfiʿī (d. 204/820) with his teacher al-Shaybānī (d. 189/805) concerning a misappropriated log and a misappropriated silver thread demonstrates how jurists tested rulings against analogy and appealed to underlying principles—here, that a claimant may recover his specific property unless doing so requires impermissible conduct. Abū Yūsuf, likewise, crafted maxims in his al-Kharāj, such as "The imām is not to remove property from the hand of a person without a known and established right to do so." As the schools of law matured, jurists detected patterns permitting them, through takhrīj, to extend rulings to unprecedented but analogous cases (naẓāʾir). The mature genre began with al-Ashbāh wa-al-naẓāʾir of the Shāfiʿī jurist Ibn al-Wakīl (d. 716/1267), and the maxims were later popularized through the codification of ninety-nine maxims in the Ottoman Majallat al-aḥkām al-ʿadliyya.

It is important to distinguish al-qawāʿid al-fiqhiyya from the maxims of legal theory (al-qawāʿid al-uṣūliyya). The latter, such as "A command conveys an obligation" (al-amr li-al-wujūb), guide the jurist in how to extract rulings from the Qur'an and Sunnah, whereas the maxims of fiqh tell the jurist what the law is. One should also distinguish a qāʿida, which permeates many areas of law, from a ḍābiṭ, which concerns a specific subject—though this distinction is not always consistently observed. Moreover, maxims are not created equal. Some are indispensable, being grounded in Prophetic tradition or the rules of reason, while others rest on shaky ground with numerous exceptions, or reflect only the doctrine of a single school. An example of the latter is the Ḥanafī maxim, "compensation and absolute liability cannot coexist" (al-ajr wa-al-ḍamān lā yajtamiʿān), which other schools reject. Some jurists have accordingly warned that maxims are descriptive rather than prescriptive, serving as titles or ex-post attestations (shawāhid) rather than bases for rulings, since many carry exceptions and qualifiers—as with "Necessity renders the impermissible permissible," which requires several conditions before application. This caution and the earlier reliance on maxims may be reconciled: the indispensable maxims may be safely applied, while broader and contested ones warrant recourse to qualified jurists.

Among the maxims examined are the five grand maxims, unanimously accepted as foundational. The first, "Matters are treated in accordance with their intentions" (al-umūr bi-maqāṣidihā), rests on the Prophetic ḥadith, "Indeed, actions are judged by their intentions." In ritual matters, the intention to worship God (niyyat al-taqarrub) is a condition of validity; the Qur'an condemned the hypocrites who built a rival mosque claiming, "We intended only the best," while God testified, "indeed they are liars" (9:107). In transactions (muʿāmalāt), a distinction arises between one's accountability to God (ḥukm al-diyāna) and accountability before a judge (ḥukm al-qaḍāʾ), which may not always align. Al-Shāfiʿī famously held that a judge may not invalidate an outwardly valid contract merely on suspicion of malicious intent.

The second grand maxim, "Certainty is not displaced by doubt" (al-yaqīn lā yazūl bi-al-shakk), which al-Suyūṭī held to permeate the whole of fiqh, is deduced from the ḥadith concerning one who doubts whether he has broken his ablution. The third, "There shall be no harm nor reciprocation of harm" (lā ḍarar wa-lā ḍirār), is a verbatim ḥadith yielding numerous branch-maxims concerning the repelling and removal of harm. The fourth, "Hardship calls for ease" (al-mashaqqa tajlib al-taysīr), rests on the verses, "God intends ease for you and does not intend hardship" (2:185) and "He has not placed upon you in religion any hardship" (22:78), giving rise to the licence (rukhṣa) and to "Necessities render the impermissible permissible," rooted in verses permitting the consumption of carrion under duress (2:173; 5:3; 6:145; 16:115). The fifth, "Custom is determinative" (al-ʿāda muḥakkama), draws authority from the Qur'anic deference to maʿrūf (2:228; 4:19) and from the Prophet's ﷺ instruction to Hind bint ʿUtba to take from Abū Sufyān's wealth "in accordance with maʿrūf." Ibn al-Qayyim (d. 751/1350) deemed reliance on custom obligatory in adjudication, and al-Qarāfī (d. 684/1285) considered the failure to change custom-based rulings when the custom changes to be "contrary to consensus" and "ignorance in religion," as Ibn ʿĀbidīn (d. 1836) likewise affirmed.

Further maxims treated include "One ijtihād cannot invalidate another" (al-ijtihād lā yunqaḍ bi-mithlih), applied by ʿUmar ibn al-Khaṭṭāb; "Gains correspond to the risk of loss" (al-kharāj bi-al-ḍamān), itself a Prophetic ḥadith; the impermissibility of dealing in another's property without permission, grounded in the verse, "do not consume one another's wealth unjustly" (4:29) and the ḥadith forbidding a Muslim's property save by his consent; and "The validity of public actions hinges on benefit" (al-taṣarruf ʿalā al-raʿiyya manūṭ bi-al-maṣlaḥa), which Ibn ʿAbd al-Salām (d. 660/1262) grounded by analogy in the command not to approach the orphan's property "except in the best of ways." The paper leaves open the important question of who determines what constitutes a beneficial public action. Finally, "The claimant is burdened with evidence; the defendant with the oath" (al-bayyina ʿalā al-mudʿī wa-al-yamīn ʿalā man ankar) is examined alongside the differences among the Ḥanafī, Mālikī, Shāfiʿī, and Ḥanbalī schools regarding the oath of denial (nukūl) and proof by one witness with an oath (shāhid wa-yamīn).

This survey covers only a small portion of the maxims, serving as a primer intended to help the reader appreciate that Islamic law rests upon a bedrock of principles, many laid down by the Prophet Muhammad ﷺ himself, deduced from the Qur'an and Sunnah and from the accumulated doctrines of earlier jurists through analogical reasoning rooted in the recognition that like cases should be treated alike.