Banu Qurayza and the Captives
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After the Battle of the Trench, the men of the Jewish tribe Banu Qurayza surrendered; on the verdict of Sa‘d ibn Mu‘adh — which Muhammad ratified as “the judgement of Allah” (Sahih al-Bukhari 4121) — all adult males (sirasiraThe traditional biography of Muhammad. The earliest surviving sira (Ibn Ishaq, via Ibn Hisham) dates to over a century after his death.Full glossary → sources: 600–900) were beheaded in the market trenches of Medina, and the women and children enslaved; Quran 33:26 references the event (“some you killed, and some you took captive”). Quran 4:24 permits intercourse with married captive women (“those your right hands possess”), the occasion of revelation being the captives of Awtas (Sahih Muslim 1456). At Khaybar, Kinana, husband of Safiyya, was tortured and killed over treasure, and Muhammad took Safiyya in marriage (Ibn Ishaq; the marriage itself is in Bukhari 371).
Common Muslim Responses
Defenders argue Banu Qurayza committed treason during an existential siege, violating the Constitution of Medina; the punishment followed the tribe’s own scripture (Deuteronomy 20 parallels) via Sa‘d’s arbitration, which both sides accepted in advance; captive concubinage regulated an institution universal in antiquity, with strong incentives toward manumission; the Kinana torture report comes from Ibn Ishaq without an authenticated chain.
Counter-Rebuttal
Critics respond that treason was collective only by tribal attribution — individual fighters and non-combatant adolescents (tradition: boys were inspected for pubic hair to decide execution, Sunan Abi Dawud 4404) were killed by category; that invoking Deuteronomy concedes the moral standard Islam claims to supersede; and that the sira material is accepted by the tradition when it supplies chronology and victories but waved off as chainless when it records cruelty. Above all, the internal problem is normativity: these precedents entered fiqhfiqhIslamic jurisprudence — the human science of deriving legal rulings from the Quran, sunnah, consensus, and analogy.Full glossary → as law (captive concubinage, the treatment of surrendered fighters), because the actor is the eternal exemplar — which is precisely the claim the critique tests.