The big five of India in Sufism; holy biographies of 1. Hazrat Khwaja Qutubuddin Bakhtiyar Kaki of Delhi; 2. Hazrat Khwaja Fariduddin Masood 'Gang Shakar' of Pak Patan; 3. Hazrat Makhdoom Allauddin Ali Ahmed 'Sabir' of Kalyar; 4. Hazrat Khwaja Nizamuddin Aulia 'Mahboob Elahi' of Delhi; and 5. Hazrat Khwaja Naseeruddin Mahmood 'Roshan Chiragh' of Delhi, the illustrious spiritual successors of Ashraf-ul-Aulia, Sultan-ul-Hind, Khwaja-e-Khwaigaan, Hazrat Khwaja Muinuddin Hasan Chishti, the holy saint of Ajmer - Begg, Wahiduddin (1972)