The author uses the results of previous studies and experience of his own field research to problematize the study of the «Khatam-ash» ritual as a part of the local Islamic context in the Tyumen Region. A. Shahab was fol-lowed in understanding of the local Islamic context (Con-Text in loco) as a complex of meanings and practices that was formed as a result of previous hermeneutic interactions with the Revelation to the Prophet Muhammad. The «Khatam-ash» ritual is understood as a prescription/script (written or not) that includes sacrifice (depending on the occasion), uttering of Niyyah, recitation of Qur’an, collective supplication, giving of Sadaqah, and a collec-tive meal. Fieldwork materials gathered by the author in towns and rural settlements of the Tyumen Region in the second decade of the 2000s served as the main sources for the article. The author also analyzed publications by historians, ethnographers and social anthropologists, who studied similar phenomena in Russian, Central Asian, and North African regions. We conclude that Khatam-ash is the main ritual that makes up the local Tatarian Is-lamic context in the Tyumen Region. This prescription underlies most of the home collective prayer meetings to commemorate one's passing away or to wish for the happiness of the living ones. The local people are familiar with this ritual since early childhood, because, through its ceremonies, they get acquainted with and constantly witness manifestations of Islam among their dear and close ones. Khatam-ash is the most affordable and com-fortable way to satisfy the existential needs of the people who consider themselves Muslims, but who do not know how to behave in mosques and doubt if they have a right to attend a mosque. Through Khatam-ash, Tatars main-tain and establish relations with their relatives. In the long term perspective, the author considers a detailed de-scription and comparison of regional and local features of the performance of the ritual.