Using somebody else's item without their permission- is that stealing or borrowing?

How does the mechanism of yeush work on a legal and spiritual level?

When the roof of Rav Huna's Beit Midrash cracked and splintered

The difference between identifying a lost item using a siman vs. teviyut ayin

How to tell who the true signed name on a document is when there is more than one person with the same name in that town

Can a loan document that's already been paid back be used a second time for a loan?

How was Yaakov allowed to purchase the Birthright from Eisav if it was a "davar shelo bah l'olam"?

If someone gives someone a ride to their destination and at the end says pay me for the gas, are they required to pay given that the person was going anyway?

How did Avraham take ownership possession of Eretz Yisrael?

If someone finds a signed cheque on the ground, do they have to return it to the owner or the person it is written out to?