Sub-lending

Hi,

One who borrows an item may not then lend it to someone else, lest that third party steal it for himself. If it is an item that cannot easily be stolen, though, like a house, then one may lend its use to a third party, and simply accept responsibility for any damage.

(Shulchan Aruch Choshen Mishpat 342:1; Sefer Meirat Einayim 342:1)

Have a great day,
Mordechai