No director or officer of any cemetery authority shall directly or indirectly, for himself or as the partner or agent of others, borrow any funds of the corporation or association, nor may he become an indorser or surety for loans to others, nor in any manner be an obligor for money borrowed of or loaned by the corporation or association, nor shall a corporation of which a director or an officer is a stockholder, or in which either of them is in any manner interested, borrow any of the funds of the corporation or association.