Husband estopped from contesting legitimacy, except for fraud
46. If the husband has, directly or indirectly, recognized the legitimacy of the child, or if the period for contesting such legitimacy has lapsed, he cannot contest the legitimacy unless the Court is satisfied that such acknowledgment or lapse has been procured or occasioned by fraud and, in every such case, a further period of one month is allowed as from the date of the discovery of the fraud.