Marriage and Commerce in Al-Muhalla

Ibn Hazm's chapters on marriage and commerce in Al-Muhalla produce some of the most distinctive and debated positions in classical Islamic legal literature — positions that challenge the consensus of the four Sunni schools while remaining grounded in textual evidence that Ibn Hazm considered compelling.

On marriage, Ibn Hazm's position on the wali (guardian) is interesting: he requires the wali for a woman's first marriage based on the hadith evidence, but does not require a guardian for a previously married woman (thayyib) who wishes to remarry. He grounds this in the hadith 'The thayyib has more right over herself than her guardian' (Muslim), interpreting 'more right' as meaning she can contract without the guardian's involvement. This position — more permissive than the Shafi'i and Hanbali schools but less so than the Hanafi school — reflects his textual analysis of the specific hadiths on this question.

Ibn Hazm's position on the mahr is striking: he holds that there is no minimum mahr — anything agreed between the parties, even if trivial in value, constitutes a valid mahr. He rejects the Hanafi school's minimum of ten dirhams as lacking textual basis. The hadith 'Seek even a ring of iron' (al-Bukhari) is his evidence: if a ring of iron constitutes a valid mahr, then any material thing agreed upon is valid. This position aligns with the Shafi'i school against the Hanafi.

On music during the wedding feast (walimah) and the requirements of the walimah celebration, Ibn Hazm is notably less restrictive than scholars of some other schools — his literal reading of the relevant hadiths leads him to permit certain forms of musical expression at celebrations that some scholars in the four schools have restricted.

In commercial law, Ibn Hazm's rejection of qiyas produces distinctive positions. The six ribawi items are established by the hadith (al-Bukhari, Muslim): gold, silver, wheat, barley, dates, salt — these specifically cannot be exchanged among their own type except in equal amounts and on the spot. But Ibn Hazm refuses to extend the riba rules to other commodities by analogy, arguing that only these six have been explicitly restricted. Extending the prohibition to all food items or to all measured commodities — as the four schools do through analogical reasoning — is, in his view, adding to the Shariah what Allah did not legislate.

Ibn Hazm's engagement with the prohibition of gharar (uncertainty) in sales is also textually grounded. He accepts the prophetic prohibition of gharar sales (reported in Muslim) but argues that 'gharar' must be understood narrowly as the type of uncertainty specifically condemned in the hadith examples — selling fish in the water, birds in the sky — rather than broadly extended by analogy to all forms of commercial uncertainty. This distinction between the type of gharar explicitly condemned and the general principle of uncertainty prevention is one of the most interesting points in his commercial law analysis.

Despite the controversy surrounding Ibn Hazm and the Dhahiri school's rejection by the mainstream Sunni legal tradition on methodological grounds, Al-Muhalla remains an invaluable work of Islamic scholarship. Its comprehensive collection and analysis of hadith evidence relevant to legal questions makes it an essential reference, and Ibn Hazm's willingness to follow the evidence wherever it leads — even against the consensus of the schools — models a form of scholarly courage and textual fidelity that continues to inspire Muslim scholars and students.