Though owing to my appointment at Hyderabad I resigned my position at Baroda soon after commencing this work I wish here to express my thanks to Professor Alban G. Widgery of Baroda for his constant sympathy with and encouragement for my work in and out of the Seminar. He has also kindly accepted the book for inclusion in the Gaekwad Studies in Religion and Philosophy. I am indebted to him for a complete revision of the manuscript and for the onerous work of seeing the book through the press. I am also indebted to my brother Mutazid Wali ur Rehrnan, B. A. for valuable help in rendering many obscure passages.
Mohammad Jamil ur Rehman
Osrnania University,
Hyderabad.
