An haifi Bab a ranar 20 ga Oktoba, 1819 (1 Muharram 1235 AH) a Shiraz ga wani dan kasuwa na tsakiya na birnin kuma an ba shi sunan Ali Muhammad. Mahaifinsa shi ne Muhammad Ridá, kuma mahaifiyarsa ita ce Fátimih (1800<unk>1881), 'yar wani fitaccen dan kasuwa a Shiraz. Daga baya ta zama Baha'i. Ya zama maraya lokacin da mahaifinsa ya mutu yayin da yake matashi kuma kawunsa na mahaifiyarsa Mírjízá Siyyid `Alí, dan kasuwa, ya tashe shi. Wani zuriyar Muhammadu, mai suna Sayyid, ta hanyar Husayn ibn Ali ta hanyar iyayensa biyu. A Shiraz kawunsa ya aike shi zuwa maktab, makarantar firamare, kuma ya zauna na shekaru shida ko bakwai. Wani lokaci tsakanin 15 da 20 ya shiga gidan kawunsa, ya zama dan kasuwa a cikin garin Bushehr na Iran, sai dai idan ya damu da harkokin kasuwanci na Persian Gulf. Ya bayyana kansa a matsayin "wani matashi mai ƙarancin murya, mai ƙarancin murya, mai ƙarancin murya, mai ƙarancin murya, mai ƙarancin murya,
Hájí Mírzá Siyyid ∀Alí