First Day of Ridvan (April 21, 1863): Baha’u’llah reveals the Surih-i-Sabr

Suriy-i-Sabr (Surih of Patience) was “revealed on the first day of Ridvan” in the year 1863. It “extols Vahid and his fellow-sufferers in Nayriz …” (Adapted from ‘God Passes By’, by Shoghi Effendi). This Tablet also known as Lawh-i-Ayyub (Tablet of Job) is equal in length to almost one-quarter of the Kitáb-i-Íqán. It is in Arabic and was revealed in honour of Haji Muhammad-Taqi, a native of Nayriz, upon whom Bahá'u'lláh bestowed the title of Ayyub (Job). 
(Adapted from ‘The Revelation of Baha'u'llah v 1’, by Adib Taherzadeh) A provisional translation of this Tablet is available at Baha’i Tablets –provisional Translations.

March-April 1847: Muhammad Shah sent a letter to the Báb and in courteous terms instructed Him to go to the fortress of Mah-ku

The ruthless and rapacious Gurgin Khan, the deputy governor, [of Isfahan] induced the Shah to issue a second summons ordering that the captive Youth[the Báb] be sent in disguise to Tihran, accompanied by a mounted escort. To this written mandate of the sovereign the vile Gurgin Khan, who had previously discovered and destroyed the will of his uncle, the Mu'tamid, and seized his property, unhesitatingly responded. At the distance of less than thirty miles from the capital, however, in the fortress of Kinar-Gird, a messenger delivered to Muhammad Big, who headed the escort, a written order from Haji Mirza Aqasi instructing him to proceed to Kulayn, and there await further instructions. This was, shortly after, followed by a letter which the Shah had himself addressed to the Báb, dated Rabi'u'th-thani 1263 (March 19-April 17, 1847), and which, though couched in courteous terms, clearly indicated the extent of the baneful influence exercised by the Grand Vizir on his sovereign. The plans so fondly cherished by Manuchihr Khan were now utterly undone. The fortress of Mah-Ku, not far from the village of that same name, whose inhabitants had long enjoyed the patronage of the Grand Vizir, situated in the remotest northwestern corner of Adhirbayjan, was the place of incarceration assigned by Muhammad Shah, on the advice of his perfidious minister, for the Báb. No more than one companion and one attendant from among His followers were allowed to keep Him company in those bleak and inhospitable surroundings. 
- Shoghi Effendi  (God Passes By)