War Regulations: The Fiqh of Siyar

The Islamic law of nations (Siyar) establishes a rigorous ethical framework for the conduct of hostilities, ensuring that military necessity never transcends the bounds of justice and human dignity.

Authority and Declaration

In Islamic jurisprudence, the declaration of war (Harb) is a strictly executive prerogative. No individual or sub-state group has the authority to initiate hostilities. It is the sole responsibility of the Khalifah (the Head of State) after due consultation with the Majlis.

Prior Invitation: Dawah before Defense

Hostilities cannot commence without a prior diplomatic ultimatum. The opponent must be given three choices:

• Islam: Acceptance of the faith, making the territory part of the Dar al-Islam with full rights.
• Jizya: Acceptance of Islamic sovereignty as a protected minority (Dhimmis) with internal autonomy.
• The Sword: Military engagement as a final resort when diplomatic integration is rejected.

Protected Classes: Non-Combatant Immunity

The Quran and Sunnah explicitly prohibit the targeting of those not actively engaged in combat. This principle of distinction is foundational to the Islamic conduct of war.

• Women and Children
• The Elderly (Shuyukh)
• Monks and Clergy
• Farmers and Laborers
• Blind and Disabled
• Service Workers

Prohibitions and Ethics

Beyond the immunity of persons, Islamic law prohibits specific methods of warfare deemed dishonorable or unnecessarily destructive:

• Mutilation (Muthla): Strict prohibition against defacing the bodies of the fallen.
• Treachery (Ghadar): Violating treaties or using perfidy to gain military advantage.
• Ecological Destruction: Prohibitions against cutting down fruit-bearing trees or killing livestock except for food.

Treatment of Prisoners of War (Asara)

The Khalifah has four legal options regarding captives, to be exercised based on the Maslaha (public interest):

1. Mann: Unconditional release or pardon.
2. Fida: Ransom for wealth or exchange for Muslim prisoners.
3. Istirqaq: Enslavement (largely obsolete in contemporary legal synthesis).
4. Qatl: Capital punishment for specific war crimes (rarely applied).

Madhab Comparison: Conduct in War