Christopher Melchert proposes to historicize Islamic renunciant piety (zuhd). As the conquest period wound down in the early eighth century c.e., renunciants set out to maintain the contempt of worldly comfort and loyalty to a greater cause that had characterized the community of Muslims in the seventh century. Instead of reckless endangerment on the battlefield, they cultivated intense fear of the Last Judgement to come. They spent nights weeping,...