April 19

The attempt on the life of Násiri’d-Dín Sháh, as stated in a previous chapter, was made on the 28th of the month of Shavval, 1268 A.H., corresponding to the 15th of August, 1852. Immediately after, Bahá’u’lláh was arrested in Níyávarán, was conducted with the greatest ignominy to Tihrán and cast into the Síyáh-Chál. His imprisonment lasted for a period of no less than four months, in the middle of which the “year nine” (1269), anticipated in such glowing terms by the Báb, and alluded to as the year “after Hin” by Shaykh Ahmad-i-Ahsá’í, was ushered in, endowing with undreamt-of potentialities the whole world. Two months after that year was born, Bahá’u’lláh, the purpose of His imprisonment now accomplished, was released from His confinement, and set out, a month later, for Baghdád, on the first stage of a memorable and life-long exile which was to carry Him, in the course of years, as far as Adrianople in European Turkey, and which was to end with His twenty-four years’ incarceration in Akká. 
- Shoghi Effendi  (‘God Passes By’)