(2)Nothing in sub-section (1) shall be deemed-(a)to restrict the slaughter of any animal in any place on the occasion of any festival or ceremony, subject to such conditions as to prior or subsequent notice as the Chief Executive Officer with the previous sanction of the District Magistrate may, by public or special notice, impose in this behalf; or(b)to prevent the Chief Executive Officer, with the sanction of the Board, from setting apart places for the slaughter of animals in accordance with religious custom.