Khaled Ahmed (23 May 1998). "The secular Mussalman". The Indian Express.
The secular Mussalman. Retrieved 2012-05-04.
Photo gallery of M. Ali Jinnah (Founder of Pakistan)
These are the two links. The first one refer to debate about Qaid's sect mainly because of inheritence disputs. The second one shows the copy of his marriage certificate.
His marriage was solemnised according to Ja'afari fiqh on 19th April 1918. The two persons who solemnised it were Sheikh Abul Qasim Najafi and the Maharaja of Mehmudabad, both ithna 'ashari Shi'a Muslims. The name of Jinnah reads as "Muhammad Ali wald (son of) Jeenah Khwaja Athna Ashari. . . ."