Borrowing Archives

If someone runs a Gmach that has money that belongs to other people (all the money has to be returned eventually). What principles could there be with regard to someone’s check bouncing? What kinds of limitations are there with regard to contacting him about making the payment?

One who lends money to others is fully entitled to collect the loan. One may ask for repayment, and if a check bounces, one may contact the borrower to…

Is it Halachicaly acceptable to inform someone in advance that you will charge them for using an item of yours without permission?

I.e. a book, you never charged others to borrow, but because a person is using it without permission, the owner would like to stop such behavior by setting a fine.…