How to file proof affidavit along with documents

I am the respondent in a case filed by my wife for divorce . Hindu religion . In my counter I denied all averments without citing any documentary evidences . PW1 crossing is over posted for respondent crossing . I wish to submit some doc's in connection with my counter . Query How can I introduce these docs now ? Any application is reqd ? If yes under which order of CPC these docs can be submitted . Also where can I insert explanation of these docs bcoz the proof shud be same as counter ?