Yiush

Yiush is a concept in the Talmud regarding a Jew who loses an object ("aveidoh") and another Jew finds it and the person who lost it is determined to have given up on the object. The general rule is that the origianl's owners "yiush" (giving up hope on finding the object) 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.

There is:
*"Yiush shelo m'daas" meaning a person declares hope lost without knowledge (or awareness of what happened to the lost object.)
*"Yiush m'daas" meaning hope is declared lost with knowledge (or the intent of the owner to give up possession.)

Yiush shelo m'daas

Yiush shelo m'daas occurs when the owner of a lost object does not know the object is lost (or does not know the circumstances surrounding the loss), but would have given up hope on finding the object had he known that the object was lost (e.g., if an item with no form of identification falls from the pocket of a person on a public thoroughfare but the person does not know that it has fallen). The legal significance of this scenario occurs if the object is found by another person before the owner of the property discovers his loss.

There was a Talmudic dispute between Abaye and Rava whether this is a valid form of "yiush," i.e., whether the finder must return of the object or whether he may keep it. Abaye maintained that this was not a valid form of Yiush and thus the finder must return an object found under these circumstances. Rava allowed the finder to keep the object under these circumstances. The Talmud itself settles the dispute in favor of Abaye. [Bava Metziah 21A-22B]

Yiush m'daas

"Yiush m'daas" occurs where the owner actually gives up hope on finding a lost object or where a reasonable person would have given up hope under the circumstances. It is undisputed in the Talmud that this occurrence releases the object into the public domain so that a finder of the object may then keep it.

Examples of scenarios where a person can be assumed to have given up hope on losing an object include:

* Where the object has no identifying mark and it not left in a specific location based on which it can be identified. [Bava Metziah 21B]
* Where an object has been carried out to sea. [Bava Metziah 22B]
* Where the object has been stolen by armed robbers. [Sukkah 30B]

References