Sarfarāz Khān (c. 1700 – 29 April 1740), born ''Mīrza Asadullāh'', was a Nawab of Bengal. Sarfaraz Khan's maternal grandfather, Nawab Murshid Quli Khan of Bengal (Bengal, Bihar and Orissa) nominated him as the direct heir to him as there was no direct heir. After Murshid Quli's death in 1727, Sarfaraz ascended to the ''Masnad'' (throne) of the Nawab. Sarfaraz's father, Shuja-ud-Din Muhammad Khan, then the ''Subahdar'' of Orissa, getting to know it arrived at Murshidabad, the capital of the Nawabs of Bengal with a huge army. To avoid a conflict in the family the dowager ''Begum'' of the Nawab asked Shuja-ud-Din to ascend to the ''Masnad'' after Sarfaraz abdicated in favour of his father. However, circumstances led Shuja-ud-Din to nominate Sarfaraz as his heir and after Shuja-us-Din's death in 1739, Sarfaraz Khan again ascended to the ''Masnad'' as the Nawab of Bengal (Bengal, Bihar and Orissa).
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