The article examines the missionary–pilgrimage channel through which Byzantine practices of charity and healing were transferred into the cultural space of Medieval Rus′ (11th–15th centuries). Drawing on a corpus of Russian pilgrimage narratives (khozhdeniia, above all that of Abbot Daniel), chronicle reports, and the hagiographic tradition, it traces the trajectory from observing Byzantine forms of ecclesiastical benevolence and sacred healing to their adaptation and institutionalization in Rus′. It is shown that pilgrimage accounts record not only the topography of shrines and travel routes, but also «material mediators» of treatment–oil, water, particles of relics, and blessed objects (eulogiai) – as well as practices of care, bathing, and basic hygiene. The study identifies organizational models of assistance – hospitality for strangers, monastic hospitals, refectories, and food distribution–perceived as exemplars and transmitted through pilgrims’ personal experience. A research gap is clarified: historiography has examined texts and institutions separately, while the mechanism linking them as a historical process remains insufficiently described. Missionaries and pilgrims are interpreted as intermediaries in introducing a Byzantine model of healing, synthesized with local traditions and contributing to the development of monastic medicine and a culture of church charity in Rus′. The article shows how, upon returning home, pilgrims brought back stories and relics, consolidating healing practices with the support of local elites.