A qadi is a judge in Islamic law who hears cases and issues binding rulings under Sharia. The office dates to the earliest decades of Islam, when the second caliph, Umar I, reportedly became the first leader to delegate judicial authority to a dedicated official rather than settling every dispute himself. Classically, a qadi handled far more than courtroom disputes: family matters, inheritance, charitable endowments, and guardianship of orphans and others who could not manage their own affairs all fell within the office. In most Muslim-majority countries today, the role is narrower, concentrated on personal status matters like marriage, divorce, and inheritance.
What a Qadi Does
The core function is dispute resolution. Parties bring a case, the judge reviews their evidence, applies the relevant legal principles, and issues a ruling that binds both sides. The decision might award financial compensation, restore property, or dissolve a marriage. In classical doctrine the ruling was final, though Muslim states eventually built review mechanisms around that principle.
Beyond the courtroom, the qadi became the primary supervisor of waqf, the charitable endowments that funded mosques, schools, hospitals, and other public services. When endowment property was misappropriated, the qadi had authority to reclaim it and restore it to its intended purpose.
Qadis also served as guardians for people who could not protect their own financial interests. Orphans whose parents left no testamentary guardian had their property placed under judicial supervision, and court-appointed trustees were accountable to the qadi for how they managed the inheritance. The judge could intervene when funds were being wasted or stolen. The same guardianship extended to people with cognitive disabilities and, in classical doctrine, to women who lacked a family member to oversee their marriage contracts.
What Falls Inside and Outside a Qadi’s Jurisdiction
The traditional caseload sits in personal status and civil law: marriage contracts, divorce, inheritance shares, child custody, and waqf administration. Studies of Umayyad-era qadis describe their jurisdiction over family law as unquestioned, with neither local elites nor political leaders standing above the judge in those areas. Civil disputes over property transfers and commercial contracts also went to the qadi. Merchants who disagreed over the terms of a sale or the authenticity of a deed could bring the matter to court.
Serious criminal law generally did not. Offenses like armed robbery, theft meeting the threshold for amputation, and other crimes carrying fixed Quranic penalties, known as hudud, were often dealt with by the political authorities or specialized tribunals rather than the ordinary qadi court.
The qadi’s domain also had a clear boundary with the muhtasib, the market inspector who ran the hisbah. The muhtasib’s job was proactive: patrolling markets, checking scales, monitoring food quality, preventing price manipulation, and enforcing public morality in commercial spaces. When enforcement escalated into an actual legal dispute, the muhtasib was supposed to hand the matter to the qadi for a formal ruling.
How a Qadi Decides a Case
A qadi works through a structured set of sources. The Quran comes first, supplying both broad principles and specific rules. When the Quran does not address a question directly, the judge turns to the Sunnah, the recorded sayings and practices of the Prophet Muhammad preserved in the Hadith literature. These two sources together form the foundation of most rulings.
For questions neither source answers, the qadi looks to ijma, the consensus of qualified scholars. Where consensus is also silent, the judge may use qiyas, analogical reasoning that extends the logic of an existing rule to a new situation. In the hardest cases a qadi might exercise ijtihad, independent reasoning from first principles. As the legal schools matured, most qadis relied heavily on the established rulings of their school rather than engaging in fresh ijtihad.
The standard form of proof is oral testimony from witnesses who meet the ‘adalah standard of personal integrity. Classical procedure generally requires two adult Muslim men, or one man and two women, depending on the type of case. Witnesses who lacked good character could be disqualified, which gave the qadi significant gatekeeping power over what evidence reached the record.
Documentary evidence also mattered, though its weight varied across legal schools and periods. In Maliki courts in Morocco, notarized documents prepared by court-appointed notaries, the ‘udul, were treated as equivalent to oral testimony and sometimes carried even more weight in practice. When a party had neither witnesses nor documents, the court could turn to the oath as a procedural last resort. A decisive oath placed the outcome in the hands of the defendant’s willingness to swear before God, resting on the assumption that a person with genuine religious conviction would not perjure himself to win a case.
Qualifications to Serve as a Qadi
Because the office carried so much authority, the requirements were demanding. Classical Islamic jurisprudence required a qadi to be an adult Muslim male of sound mind, with deep knowledge of Sharia and a personal reputation for integrity. That last requirement, ‘adalah, meant more than avoiding criminal behavior. A candidate who neglected religious obligations, committed major sins, or was known to be dishonest would be disqualified regardless of his legal knowledge. In the earliest period, the qadi also had to be a free person; enslaved individuals, however learned, were excluded.
The major Sunni schools agreed on these core requirements while disagreeing on finer points. The practical effect was a judiciary drawn from a narrow class of well-educated men whose social standing gave their rulings weight in the community.
Qadi vs. Mufti
The two roles are often confused but are fundamentally different. A qadi is a state-appointed judge whose rulings bind the parties. A mufti is a religious scholar who issues a fatwa, a non-binding legal opinion, when someone asks how Islamic law applies to a situation. The mufti’s job is to identify the correct legal rule; the qadi’s job is to establish the facts of a case and apply the rule to them. One scholar put the distinction this way: a fatwa is informative, while a judgment is creative.
In practice the two overlapped. Qadis sometimes consulted muftis on difficult legal questions, and a fatwa from a respected scholar could shape a ruling. But the mufti had no power to enforce anything. Only the qadi could compel compliance, seize property, or dissolve a marriage.
Can Women Serve as Qadis
Whether women can serve as qadis has been debated for centuries, and the major Sunni schools never reached agreement. The Maliki, Shafi’i, and Hanbali schools traditionally held that a woman’s appointment to the judiciary is invalid and her rulings carry no legal force. The Hanafi school took a more nuanced position: some Hanafi scholars permitted women to judge in areas where they could serve as witnesses, which excluded serious criminal matters. Other Hanafi jurists maintained that while appointing a woman is improper, if it happens anyway, her rulings on non-criminal matters are binding so long as they follow Sharia.
A minority of scholars went further. The Andalusian jurist Ibn Hazm and the historian and exegete Ibn Jarir al-Tabari argued that since women can serve as muftis, there is no principled reason to bar them from the bench. That position remained marginal in classical scholarship. In the modern era, Sudan and Indonesia were among the first countries to allow women to serve as judges in courts applying Islamic law. Female qadis remain rare across the broader Muslim world, though several countries have expanded access.
Qadis Today
The role is narrower than it was in the classical period. Most Muslim-majority countries adopted Western-style legal codes for criminal and commercial law during the nineteenth and twentieth centuries, limiting Sharia courts largely to personal status matters. In Egypt, personal status cases for Muslims are governed by Hanafi jurisprudence. In Malaysia, Syariah courts staffed by qadis handle family law and minor religious offenses for Muslim citizens and have no jurisdiction over non-Muslims. In Nigeria, Sharia courts operate primarily in the northern states, and their rulings can be appealed into the secular court system.
Modern qadis typically receive formal university training in both Islamic and civil law, a departure from the classical model, where qualifications came through years of study with individual scholars. In countries like Morocco and Lebanon, religious courts coexist with secular courts, and the applicable system depends on the religious identity of the parties involved. The office remains a living institution, reshaped to fit within the structures of the modern nation-state.