This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
Ahmad ibn Hanbal was imprisoned and flogged under the Mihna, an inquisition the Abbasid caliph al-Ma'mun and his two successors imposed on Islamic scholars, demanding each one publicly affirm that the Quran was created rather than eternal. Ibn Hanbal refused, a documented act of endurance sustained across imprisonment under more than one caliph in succession rather than a single episode of coercion he faced only once.
His refusal did not end the Mihna immediately, but historians credit his endurance, sustained across imprisonment under multiple caliphs, as a significant factor in the inquisition's eventual abandonment. That a policy imposed by the state on the whole scholarly class was undone in part by one jurist's documented refusal to comply under repeated flogging marks the Mihna's outcome as a case where institutional coercion met a resistance it could not outlast across successive reigns.
That the same imprisonment meant to force public compliance instead cemented Ibn Hanbal's own reputation, and with it the standing of traditionist Sunni orthodoxy generally, marks the Mihna as a documented case where an inquisition's target became more authoritative for having survived it, under caliph after caliph, than he had been before it began.