the fatal consequences that befalls leaving one's tefillin in the wrong place.
(discussion about taking off tefillin when going to the toliet, whether to leave them outside or carry them wrapped up inside. and a curious story of one student whose tefillin were stolen by a prostitute, and claimed he used them to pay her. shamed he threw himself off a roof. all so the tefillin shouldn't fall. for english translation of this talmud page see here)
this comes to you from Limmudfest. apologies for the quality of the photo