Q: What is yei’ush? In what halachic areas is it relevant?
A: Yei’ush is when a person abandons realistic hope of reclaiming his property. The Gemara (B.M. 23a) describes the classic case of yei’ush as when the owner expresses himself: “Woe to the loss of money!” (C.M. 262:5).
Yei’ush is most relevant in the laws of hashavas aveidah, returning lost property. In general, if a person finds the lost item after the owner already indicated yei’ush, or under circumstances that we can presume yei’ush – the finder can keep it. However, if he found the item before yei’ush, the laws of hashavas aveidah apply (ibid.).
Yei’ush is also relevant in the laws of geneivah, theft. After the owner expresses yei’ush, other people – not the thief – can acquire the stolen item when it reaches their possession (C.M. 362:3).
In the coming months, be”H, we will discuss details of yei’ush: the source of yei’ush; what constitutes yei’ush; when yei’ush is applicable; whose yei’ush is valid; can one retract from yei’ush?, etc.
