Ben asked:
Why is it prohibited to ride a horse on Shabbos, if Chai Nose es Atzmo? Thank you.
Ben, Brooklyn,NY,USA
The Kollel replies:
The Gemara in Beitzah 36b tells us that the Rabanan prohibited it out of the concern that the rider might break off a branch in order to use it as a whip to get the horse moving.
M. KORNFELD