Despite their distinct theological differences, Shi'a and Sunni Muslims, followers of the two main branches of Islam, share a number of core beliefs including an allegiance to and love for the Prophet Muhammad and members of his family. For Shi'a Muslims, reverence for the Prophet and allegiance to his household (Ahl al-bayt, 'People of the House'), comprising his immediate family and their descendants, constitutes an essential principle of belief that has directly impacted how Shi'i artists, rulers, patrons and ritual participants have conveyed their love and loyalty through material culture...