Foreword / by Robert Irwin -- Translator's foreword -- Introduction : the time and place of al-Ghazali -- Al-Ghazali : On the duties of brotherhood. The first duty : material assistance -- The second duty : personal aid -- The third duty : holding one's tongue -- The fourth duty : speaking out -- The fifth duty : forgiveness -- The sixth duty : prayer -- The seventh duty : loyalty and sincerity -- The eight duty : informality -- Postscript.;"On the Duties of Brotherhood demonstrates how brotherhood can be an aid to spiritual purification and the perfection of one's worship, as well as a source of help and comfort in the world. Readers will find the road to fellowship--by way of forgiveness, prayer, sincerity, loyalty, and consideration--and be enlightened by stories that illustrate the doctrine of brotherhood."--Page 4 of cover.