I just borrowed a wonderful book from the local library (let's assume Jewish library - but does it matter?). My friend sees the book and wants to read it. My library lets me keep the book for a week, so I figure "why not?"
- Can I lend the book to my friend? Or is this a case of אין השואל רשאי להשאיל ("a borrower is not permitted to lend (that which he has borrowed)", Bab. Gittin 29a; )?
- Would it matter if my friend happens to have membership at this very library?
- Is there an עבירה (sin) being committed by going ahead and lending it anyways (assuming the answers above are no)? Or am I just responsible if something goes wrong with the book?
- Would it matter if the library puts up a sign that explicitly disallows lending?