Ok... in that case, there can be the following situations :
1. If he is in Delhi, according to the recent rulings, he cannot be jailed for more than a month. This cannot affect 498 A case
2. IF he is in Gujarat, "Contempt of Court" proceedings can be initiated against him and he can be fined and jailed even if he is jobless and CANNOT pay. This jail term can be of any length even upto 6months have been observed in some Guj orders.
3. In other states, depending on case details (wife's capability to earn / education / merits of the case/ section in which maintenance order is passed etc) ... consequence will differ a lot.
Kindly mention the section and case details for in-depth analysis ... Also mention the state where this case is going on ...