Tirmidhi 1458 preserves the apostasy hadith with the same content as Bukhari 6922 — both narrate the "man baddala dīnahu fa-qtulūhu" statement via the Ikrima–Ibn ʿAbbas chain — and is treated separately here because Tirmidhi's own commentary on this hadith records the earliest documented divergence between scholars on female apostates, providing the legal-procedural context that classical fiqh would later systematise. Rudolph Peters, in Crime and Punishment in Islamic Law: Theory and Practice from the Sixteenth to the Twenty-First Century (Cambridge University Press, 2005), documents how the apostasy procedure — identifying the apostate, offering the repentance period, executing on refusal — operated as a functioning legal institution in Ottoman and later Muslim-majority courts, not merely as theoretical doctrine.

Tirmidhi himself grades Tirmidhi 1458 as sahih hasan, and the hadith parallels exist across all major Sunan collections.

The procedural framework Tirmidhi anchors: — The apostate is identified (publicly leaves Islam, denies a foundational doctrine, etc.). — The apostate is given three days to repent (or, in some schools, a longer period). — During istitāba, the apostate is encouraged through scholarly discussion. — If the apostate does not return, he is executed. — Property and inheritance rights are forfeited. — The apostate's marriage is annulled.

The theological problems (in addition to those treated under b12):

1. The procedural sophistication. The istitāba framework gives the apostasy ruling a 'civilised' veneer — three days of reasoning before execution. But the underlying structure (death for changing religion) is unchanged. The procedure formalises the killing rather than questioning it. Wael Hallaq, in Sharīʿa: Theory, Practice, Transformations (Cambridge University Press, 2009), observes that in a culture whose lynchpin is religion, apostasy functions as the equivalent of high treason in a modern nation-state — an observation that explains the procedural seriousness of istitāba without justifying the lethal outcome.

2. Female apostates' divergent treatment. The Hanafi school's imprisonment rather than execution for female apostates is sometimes cited as evidence of Islamic flexibility. But the imprisonment is open-ended (until she returns to Islam) — meaning a woman who refuses to return faces lifetime imprisonment. This is functionally a slow death sentence, with the difference being primarily cosmetic. Frank Griffel, in his study of al-Shāfiʿī's and al-Ghazālī's treatment of apostates — "Toleration and Exclusion: Al-Shāfiʿī and Al-Ghazālī on the Treatment of Apostates" (Bulletin of the School of Oriental and African Studies, 2001) — traces how the Shafi'i school structured the apostasy judgment around a set of doctrinal conditions, showing that the procedural apparatus of istitāba was designed to compel return to the faith, not to open space for genuine dissent. The Hanafi divergence on female apostates altered the penalty but not the underlying coercive logic — refusal to return still carried a punitive consequence structured to compel re-entry into the faith.

3. Modern application. Saudi Arabia, Iran, Mauritania, Sudan, Yemen, the UAE, and Qatar all retain apostasy as a capital crime in their legal codes. Pakistan's blasphemy laws (which intersect with apostasy) have produced multiple high-profile executions and lynchings. The textual basis includes Tirmidhi 1458. Jonathan A.C. Brown, in 'The Issue of Apostasy in Islam' (Yaqeen Institute, 2017), concedes that the classical position — namely that the death penalty applies to those who refuse to repent after the istitāba period — represents the consensus of Sunni and Shi'a jurists through at least the late 19th century. Brown argues for contemporary inapplicability on governance grounds, but does not dispute the textual and historical record that the penalty was real and applied.

4. The 'no compulsion' tension. Q 2:256 ('there is no compulsion in religion') is often cited against apostasy law. Classical Sunni jurisprudence has resolved the tension by reading Q 2:256 narrowly (forbidding forced conversion of non-Muslims) while permitting capital punishment for those leaving Islam. The asymmetric application — non-Muslims may not be forced into Islam, but Muslims may not leave — is not in the verse itself; it is jurisprudential construction.

5. The ethical inversion. The hadith establishes that a person's life is forfeit for changing their religion. This treats religious belief as more fundamental than life itself — but in the wrong direction. A morally serious framework would treat life as inviolable and religious belief as voluntary. The Islamic framework reverses these priorities.