This book explores the profound spiritual encounter between Serge de Beaurecueil (1917-2005), a twentieth-century French Dominican friar and Christian mystic, and the eleventh-century Ḥanbalī Sufi master Khwāja 'Abdullāh Anṣārī of Herāt (1006-1089). De Beaurecueil lived much of his Christian discipleship in Cairo and Afghanistan, where he became the foremost expert on the life and thought of Anṣārī. His mystical conversation and scholarly engagement with Anṣārī, his experience of Islamic hospitality, and the...