He is in the bathhouse before anyone else and he stays after them, and the third steaming is his. Whoever goes in once the others have finished is sharing the bench with him.
Basis: Russian bathhouse belief · AI-generated
About the Bannik
The spirit of the Russian bathhouse: the one outbuilding where people were born, where girls told fortunes, and where no icon was allowed to hang.
Linda J. Ivanits, Russian Folk Belief (1989)The standard English-language survey of the Russian village spirits. Source for the bannik's forms, the reserved steaming and the offerings.
W. F. Ryan, The Bathhouse at Midnight: An Historical Survey of Magic and Divination in Russia (1999)The fullest account of why the bathhouse is the setting it is. The title is not decorative: the banya at midnight is the standard place and hour for Russian divination, and Ryan traces the practices and the church's response to them.
G. Alexinsky, Slavonic Mythology, in New Larousse Encyclopedia of Mythology (1973)Older reference-work treatment. Useful for the rebuilding rite; its wider interpretations deserve the caution any mid-century Larousse entry does.