Return a lost object to your brother. It is a mitzvah to return a lost object. It is said that our belongings contain a portion of ourselves. It is crucial to make sure that each person has the things that belong to him or her. If you see something that has been lost, make sure you return it as quickly as possible. You can even go further with this mitzvah when you take note of anything that may have been lost by another and try to return it, such as self-worth, hope, joy in life, and inspiration.
— Brenda Shoshanna in Jewish DharmaReturn a Lost Object
