This study explores the shared spaces and common ground between the moral theosophies of Sufism and Christian mysticism in Spain. This article focuses on how Sufis, Carmelites and other mystical authors expressed spiritual concepts, establishing networks of mutual influence. Medieval and Golden Age mystics of Islam and Christianity shared a cultural canon based on universal moral principles. Both their learned and popular traditions used recurrent spiritual symbols, often expressing similar ethical coordinates. Spiritual dialogue went beyond the chronological and geographical frameworks shared by Christianity and Islam in the Iberian Peninsula: this article considers a selection of texts that contain expansive moral codes. Mystical expressions of Islam and Christianity in Spain are viewed as an ethical, cultural and anthropological continuum.