High Quality Content by WIKIPEDIA articles! Prof. Dr. Ghulam Mustafa Khan, PhD, D.Litt, SI, (September 23, 1912 – September 25, 2005) was a researcher, critic, linguist, author, scholar of Urdu literature and linguistics, educationist and religious and spiritual leader belonging to Naqshbandi order of Sufism. He was one of most notable people of Hyderabad, Sindh Pakistan.