Deuteronomy 22:3
Do the same for his donkey, his garment, and for anything lost that belongs to your fellow countryman. When you find it, you must not ignore it.
Treasury of Scripture Knowledge
Summary
In like manner shalt thou do with his ass; and so shalt thou do with his raiment; and with all lost thing of thy brother's, which he hath lost, and thou hast found, shalt thou do likewise: thou mayest not hide thyself.
General references
Bible References
General references
Exodus 23:4
"If you come across your enemy's ox or donkey wandering off, you are to certainly return it to him.