The ruling on the first borrower lending the borrowed item to another borrower without the owner's permission

The questioner : Sometimes it happens that the first borrower assumes the owner of the borrowed item would be pleased to lend it to a second borrower, just as he might find that he wants to borrow

The Shaykh : a car or a book, there must be explicit permission, meaning if the borrower knows that the one who lent it to him would be pleased to lend it to so-and-so, this does not obligate

The questioner : a trivial matter.

The Shaykh : It is not possible; leniency is shown in customary practice.