9. If any party to any judicial proceeding offers to be bound by any such oath or solemn affirmation as is mentioned in section 8, if such oath or affirmation is made by the other party to, or by any witness in, such proceeding, the Court may, if it thinks fit, ask such party or witness, or cause him to be asked, whether or not he will make the oath or affirmation: Provided that no party or witness shall be compelled to attend personally in Court solely for the purpose of answering such question.