The present book is a critical edition of Mongolian ritual manuscripts preserved in Czech collections. It offers palaeographic descriptions, transcriptions for all the manuscripts, accompanied in most cases by English translations and selected facsimiles. The edition includes the majority of popular ritual text categories written in Classical Mongolian (mostly incense offering rituals) commonly circulating in the extramonastic milieu of premodern Mongolia: texts on the (hearth) fire worship, White Old Man, Offering of the Fox, Geser Khan, hunting rituals, while several texts related to cults of local deities, protection of livestock, as well as popular religious songs and individual prayers are appearing in the scholarly literature for the first time. The corpus of edited manuscripts is preceded by a brief introduction to the role of ritual texts in the Mongolian popular religious life and to the history of their research and accompanied by thematic remarks from the fieldwork. The sources have a high comparative value for the currently intensely developing field of Mongolian Buddhist studies.