The Dispensation of the Báb ended when Bahá'u'lláh experienced the intimation of His mission in the Siyah-Chal

Dispensation is "the period of time during which the laws and teachings of a Prophet of God have spiritual authority. For example, the Dispensation of Jesus Christ lasted until the beginning of the Islamic Dispensation, usually fixed at the year AD 622, the year Muhammad emigrated from Mecca to Medina. The Islamic Dispensation lasted until the advent of the Báb in 1844. The Dispensation of the Báb ended when Bahá'u'lláh experienced the intimation of His mission in the Siyah-Chal, the subterranean dungeon in Tihran in which He was imprisoned between August and December 1852. The Dispensation of Bahá'u'lláh will last until the advent of the next Manifestation of God, which Bahá'u'lláh asserts will occur in no less than one thousand years."

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