148. When a Bill is reserved by a Governor for the consideration of the President, the President shall declare either that he assents to the Bill or that he withholds assent therefrom:

Provided that the President may direct the Governor to return the Bill to the House or, as the case may be, the Houses of the Provincial Legislature together with such a message as is mentioned in the proviso to the last preceding section and, when a Bill is so returned, the House or Houses shall reconsider it accordingly within a period of six months from the date of receipt of such message and, if it is again passed by them with or without amendments, it shall be presented again to the President for his consideration.