I roto i te 1918, i marenatia Jinnah tona wahine tuarua Rattanbai Petit ("Ruttie"), 24 tau tona taitamariki. Ko ia te tamahine taitamariki o tona hoa Sir Dinshaw Petit, a ko te wahi o te elite Parsi hapu o Bombay. He nui te ātete ki te faaipoiporaa i te hapu o Rattanbai me te hapori Parsi, me te i etahi kaiarahi whakapono Muslim. Rattanbai wero tona hapu, me te ingoa tahuri ki Ihirama, te tango (ahakoa e kore e whakamahi) te ingoa Maryam Jinnah, hua i roto i te whakangaromanga tūturu i tona hapu, me te hapori Parsi. noho te tokorua i South Court Mansion i Bombay, ka haere pinepine puta noa i India me Europe. whanau te tamaiti anake o te tokorua, Dina, i runga i 15 1919. i mua i te mate o Ruttie i roto i 1929, a muri iho i titiro Fatima Jinnah tuahine ki a ia, me te wahi o te whanau Parsi o Bombay.
Ko Jinnah