کاه از خودت نیست، کاهدون که از خودت هست
kah az khod-et nist, kahdun ke az khod-et hast
The straw isn't yours, but the barn is.
Meaning
Be careful with others' property, even if you don't own it, you are responsible for its storage.
Meaning
Be careful with others' property, even if you don't own it, you are responsible for its storage.