If someone finds something but does not take it, then no special responsibilities fall upon him.

Grand Ayatollah Safi explains some rules regarding Items that are found:

If someone finds something but does not take it, then no special responsibilities fall upon him.

If an item is found, then the following rules will apply to it:

If the item does not have any special signs which would help one in finding its’ owner, then one is allowed to take it for ones’ self, but according to Ihtiyat Mustahab( preferred), one should give it away as Sadaqa (charity) on behalf of the owner.

If the value of the item is worth less than 12.6 chickpeas of coined silver, and the owner is not known, then one can keep it for oneself. However, once the owner has been found, then according to Ihtiyat Wajib (obligatory), one must replace or return the item to its owner.

If the value of the item is not less than 12.6 chickpeas of coined silver and it has some special signs on it that would help to identify the owner, then for the first week, an announcement must be made every day, and each week after that, it must be announced once per week. In the event that after one year of announcing, the owner still is not found, one is allowed to keep it for the owner so that whenever he is found, the item can be given back to him. However, according to Ihtiyat Mustahab, one should give it to a poor person, other than a Sayyed, as Sadaqa (charity).

2.If one knows that announcing (the lost item) is of no benefit, or there is no hope of finding the owner, then it is not necessary to announce (the lost item), but one cannot keep the item for oneself.