(1) A court may, in any proceedings order and allow to all persons required to attend, or be examined as witnesses such sums of money as seem fit both for defraying their reasonable expenses and for giving them reasonable compensation for their trouble and loss of time.

(2) It shall not be lawful in any proceedings for a person to refuse to attend as a witness, or to give evidence when so required by order of the court on the grounds that his expenses have not first been paid or provided for.