Keep them in the box, and don’t open it until the owner comes to claim it.
Lend them to the local Beis Medrash.
What should someone who found Tefillin do?
Use them once in thirty days.
Keep them in the Tefillin bag, and don’t open it until the owner comes to claim them.
Write down the Simanim, estimate their value, and use them. Then pay the owner when he comes to claim them.
Write down the Simanim and use them. Then return them to the owner when he comes to claim them. They may not be paid for, however, for the person wants his own Tefillin back.
Use them once in two weeks.
What is the difference between Tefillin and Sefarim (in the times of the Gemara)?
A person wants other people to use his Tefillin, to do this important mitzva every day.
Tefillin can be bought anywhere, so the owner doesn’t mind getting their value. Sefarim, however, were difficult to find.
A person wants people to use his Sefarim, which were difficult to find. Tefillin, however, can be borrowed from someone else, who Davened at an earlier or later Minyan.
People are very scrupulous about using Tefillin from a particular Sofer. Sefarim, however, can be bought anywhere.
Tefillin are only worn during Shacharis. Sefarim, however, are used throughout the day.
What is a good way lose money?
Wear fine Roman linen garments.
Use precious crystal Keilim.
Leave hired workers unattended in a place where they will ruin the field.