He was the son of Mullá ‘Abdu’l-Vahháb, a mujtahid (preeminent religious scholar) of Qazvin; cousin and brother-in-law of Táhirih, closely associated with her in Karbala.
He assisted Táhirih in Karbala, then traveled to Iran with her. He was present at the Conference of Badasht and later visited the Báb while He was in prison in Azerbaijan.
Mullá Jalíl Urúmí was the eleventh Letter of the Living. He taught the Bábí Faith especially in Azerbaijan and Qazvin
Mullá Hasan Bajistání was the sixth Letter of the Living.
He was the third Letter of the Living and was the nephew of Mullá Husayn.
He was the younger brother of Mulla Husayn and the second Letter of the Living.
He cheered and strengthened the disconsolate disciples of his beloved chief