Yeiush
Yeiush (Hebrew: יֵאוּשׁ, romanized: yēʾuš, lit. 'despair'), accepting a lost item is gone forever, is a concept in the Talmud regarding a Jew who loses an object (Hebrew: אֲבֵדָה, romanized: ʾəḇēḏā, lit. 'loss'), and another Jew finds it when the Jew who lost it is determined to have given up on the object. The general rule is that the original owner's yeiush releases the object into the public domain, thereby allowing a finder of the object to keep it and releasing the finder from the obligation to return it to the original owner.