(a) Other Justices May Participate Without Reargument. Whenever the justices before whom a law question has been heard so desire, others of the justices may be called in to take part in the decision, upon a perusal of the record and briefs, without reargument.

(b) Justice May Review Own Ruling in Certain Cases. No justice shall sit on the hearing of any proceeding in the nature of a review of any judgment decree, order, or ruling made by him; provided, however, that this shall not apply where it is necessary to secure a quorum or where the other justices of the court shall be equally divided in opinion.