«Arab troops were dispatched by Abu Gia-far to China.»
(EN) Stanley Ghosh, Embers in Cathay, Doubleday, 1961. URL consultato l'8 luglio 2019.
«During the reign of Abbassid Caliph Abu Giafar in the middle of the 8th century, many Arab soldiers evidently settled near the garrisons on the Chinese frontier.»