Interim maintainance

Hi, my wife filed 498a and dv case against me in may 2013. 498a trial is going on. Judge of civil court has passed interim maintaince order only on the basis of written afidavit. She hasnt submitted any income proofs of mine. Nowadays im unemployed n suffered from abdominal disease. Treatment is going on on my parents expenditure. Thats why im unable to pay due maintaince of around Rs 80,000 n monthly Rs 4400/-. Judge has sent me twice in jail for 30 days imprisonment, once in june 2015 n in feb 2016. My lawyer saying that i cant escape from maintainance. What should i do? How can court force an unemployed person to pay the money?