Some accounts maintain that the prime minister intervened in the correspondence between the Báb and the Sháh. En route to Tabríz the Báb wrote to various people, including the Grand Vizier, the father and uncle of Táhirih, and Hájí Sulaymán Khán. Hujjat learned of this last letter and sent a message to the Bábís of Zanján to rescue the Báb. The Báb declined their assistance. [Bab124–5; DB235–6]

Try also a shorter date like 1847-04-1 or 1847-04

try also the Chronology Canada — 1847-04-17 or 1847-04-1 or 1847-04