include Quranists, nondenominational Muslims. There are also two Mahdi'ist based creeds practiced in Pakistan, namely Mahdavia and Ahmadis, the latter of whom are considered by the constitution of Pakistan to be non-Muslims, constitute 1% of the Muslim population. Pakistan has the world's largest Muslim majority city (Karachi). Islam before the creation of Pakistan The connection between the Indus Valley and Islam was established by the initial Muslim missions. According to Derryl N. Maclean, a link between Sindh and early partisans of Ali or proto-Shi'ites can be traced to Hakim ibn Jabalah al-Abdi, a companion of the Islamic prophet Muhammad, who traveled across Sind to Makran in the year 649AD and presented a report on the area to the Caliph. He supported Ali, and died in the Battle of the Camel alongside Sindhi Jats. He was also a poet and a few couplets of his poem in praise of Ali ibn Abu Talib have survived, as reported in Chachnama: During the reign of Ali, many Jats came under the influence of Islam. Harith ibn Murrah Al-abdi and Sayfi ibn Fil' al-Shaybani, both officers of Ali's army, attacked Sindhi bandits and chased them to Al-Qiqan (present-day Quetta) in the year 658. Sayfi was one of the seven partisans of Ali who were beheaded alongside Hujr ibn Adi al-Kindi in 660AD, near Damascus. The Arab conqueror Muhammad bin Qasim conquered Sindh in 711 CE. The Pakistan government's official chronology claims this as the time when the foundation of Pakistan was laid. The Early Medieval period (642–1219 CE) witnessed the spread of Islam in the region. During this period, Sufi missionaries played a pivotal role in converting a majority of the regional Buddhist and Hindu population to Islam. These developments set the stage for the rule of several successive Muslim empires in the region, including the Ghaznavid Empire (975–1187 CE), the Ghorid Kingdom, and the Delhi Sultanate (1206–1526 CE). The Lodi dynasty, the last of the Delhi Sultanate, was replaced by the Mughal Empire (1526–1857 CE). Islam in independent Pakistan Nature of state The Muslim League leadership, ulama (Islamic clergy) and Jinnah had articulated their vision of Pakistan in terms of an Islamic state. Muhammad Ali Jinnah had developed a close association with the ulama. When Jinnah died, Islamic scholar Maulana Shabbir Ahmad Usmani described Jinnah as the greatest Muslim after the Mughal Emperor Aurangzeb and also compared Jinnah's death to the Muhammad's passing.