Section 6(1)

6. (1) Any such Committee may, at its discretion, if circumstances so require, instead of issuing a summons under sub-section (1) of section 4, or even if such summons has been issued, at any time issue a commission for the examination of any person whose attendance before such Committee cannot be secured conveniently or without unreasonable delay or expense. Such commission may be issued to any person (hereinafter called the Commissioner) by a formal writ under the hand of the Secretary to the Committee, and such writ shall direct the Commissioner so appointed to examine the person concerned on oath or solemn affirmation and to return the writ of commission with the record of his proceedings to such Secretary within a date to be specified in such writ, or within such later date as may be subsequently fixed by the Committee. It shall be lawful for such Commissioner to administer, in accordance with the provisions of the Indian Oaths Act, an oath or solemn affirmation to such person, who shall be bound to take the oath or solemn affirmation.