At one-point, Mírzá Buzurg moved with his third wife to a house in Tihrán, close to the Masjid-i-Sháh [Mosque of the Sháh], which this wife had inherited from her father. When this happened, Bahá’u’lláh rented a large house near the Gate of Shimrán, and took His wife, His mother and siblings, and His father’s other wives and their children [His half-siblings] to live there with Him. This house now became Bahá’u’lláh’s residence until His exile from Persia [January 1853]. Mírzá Buzurg died in 1839.
All three of Bahá’u’lláh and Ásíyih Khánum’s children were born in this house in Tihrán, near the Gate of Shimrán. 78ACT3 The eldest child, named ‘Abbás [‘Abdu’l-Bahá] was born on 23rd May 1844, the day of the Declaration of the Báb in Shíráz. Only a few months later, Mullá Husayn will come to Tihrán bearing the Message of the Báb for Bahá’u’lláh. He will stay in the Madrisih of Mírzá Sálih, which was very close to the house of Bahá’u’lláh. At that time, Bahá’u’lláh had just become twenty-eight years old.