Ukehi
Ukehi or ukei is a Japanese Shinto divination ritual.
Hayashi Oen, a nineteenth-century practictioner of ukehi, identified six functions of the rite. He claimed it could be used to:
The dictates of ukehi can come as a dream, but more commonly the petitioner would use the ritual to ask a question of the kami and then await an omen of some sort to confirm their response. If nothing happened, it was assumed that the kami did not favour the proposed course of action. The questioning of the kami took the form of an oath or vow. Sometimes the ritual involved inscribing the choices available on bamboo slips, which were then shaken in a container; whichever slip fell out dictated the appropriate course of action.
...
Wikipedia