(i) to give evidence; (ii) to be examined upon oath which the Speaker, the chairman of the committee or any other person appointed by the Speaker, may administer for the purpose. 10 Summonses A summons to attend before Parliament or a committee shall— (a) be issued under the hand of the Clerk; and (b) state— (i) the name of the person required to attend; and (ii) the time and place at which he is required to attend; and (iii) the description of the document or thing, if any, which he is required to produce; and (c) be served on the person required to attend by a police officer or other person authorized by the Clerk— (i) delivering a copy to him in person; or (ii) leaving a copy with some adult person at his usual or last known place of residence. 11 Witness expenses A witness in or before Parliament or a committee, whether or not he is summoned in terms of section ten, shall, subject to the Standing Orders, be paid or tendered such sums in respect of the expenses of his attendance as are fixed by the Speaker. 12 Examination of witnesses (1) A witness in or before Parliament or a committee, whether or not he is summoned in terms of section ten, shall, subject to this section, be bound— (a) to answer any question which may be put to him; (b) to produce any document or thing which he may actually have in his possession. (2) No witness in or before Parliament or a committee shall be required or permitted to— (a) give evidence as to any fact, matter or thing; or (b) produce any document or thing; which he would not be required or permitted to produce in any case depending before the High Court by reason that the fact, matter, thing or document on a principle of public policy and from regard to public interest ought not to be disclosed and is privileged from disclosure. (3) No witness in or before Parliament or a committee shall be required to answer any question which is irrelevant to the subject of inquiry and of a private nature. 5