Under Section 13(1)(i-a) of the Hindu Marriage Act, 1955, a single act of adultery after marriage is sufficient ground for both judicial separation and divorce. Judicial separation can be sought on grounds of adultery without requiring cohabitation for one year after the decree. For divorce, the same single act of adultery qualifies as a ground under Section 13(1)(i-a). The law recognizes adultery as a matrimonial offense grave enough to warrant either remedy.