Written in reply to a question from Siyyid Yúsuf-i-Sidihí Isfahání who had asked the question of how the promised Mihdí could have been "transformed" (meaning: the return of the Promised One in a different human guise) into the Báb. The work was revealed on the same day as the question had been received. Bahá`u`lláh himself states that he took "the opportunity provided by" the question "to elaborate on a number of subjects". The Tablet was written during His time in Baghdad (1853-1863). The book is available in English and Hindi.
