Sulaiman al-Tajir, was a 9th-century Muslim merchant, traveler and writer. He was initially from Siraf. He had voyaged to India and China. In the year 850, he wrote about his voyages to India and China.
During his stay at the city of Guangzhou he noted that the Cinese used fingerprint records to maintain the identities of newly arrived foreigners and charges extortionate rates for imported goods and that the route to China by sea was dangerous due to piracy and frequent rain. He mentions that the local Muslim populace of Guangzhou had their own Mosque and Bazaars. He mentioned that the Muslim community had its own Imam and Judge (appointed by Emperor Xuānzong of Tang). He also observes the manufacturing of porcelain, the granary system of Guangzhou, and how its municipal administration functioned.