A spell was cast upon Hananya, nephew of R. Joshua in Capernaum, which caused him to enter Tiberias riding on an ass on the sabbath. R. Joshua cured him with a certain ointment and spells and sent him away to Babylon.
The Spell That Made a Nephew Ride a Donkey on Shabbat
Gaster, Exempla of the Rabbis No. 213b (1924); Kohelet Rabbah 1:8