[7] The mystic Husain ibn Mansur al Hallaj, who is credited with the utterance Anal Haqq ("I am The Creative Truth"), reached Sindh in 905, proceeding from Gujarat.
[9] In 12th Century, a new wave of Sufi Mystics came to South Asia, these included Mu'in al-Din Chishti who brought the Chishtiyya order to South Asia, Lal Shahbaz Qalandar, a Sufi saint from Sindh itself and founder of the Qalandariyya order, Baha-ud-din Zakariya, a Sunni Muslim scholar saint and poet who established the Suhrawardiyya order of Baghdad in medieval South Asia, Baba Farid, a mystic, poet and preacher and Jalaluddin Surkh-Posh Bukhari.
Bahauddin Zakariya, Lal Shahbaz Qalandar, Baba Farid and Syed Jalalauddin Bukhari, together became known as the legendary Haq Char Yaar, or "Four friends" group.
Friendship of these famous Sufi saints who were preaching in different regions of South Asia at that time helped spread Sufism in Sindh.
[10] Sufi Saints like Pir Mangho and Bodla Bahar were disciples of Baba Farid and Lal Shahbaz Qalandar who were greatly inspired by them and continued to spread Sufism in Sindh in 13th Century.
By 15th Century, Sindh started producing many Sufi saints and poets of its own such as Makhdoom Bilawal and Qazi Qadan of Bukkur who is also known as "The Father of Classical Sindhi Poetry".