civil proceedings

Hello,

You have to prove your case on merits on the final hearing of the case. Interlocutory is the interim stage you have to conduct the whole case for final judgment. 

You have to follow the procedure prescribed in cpc means have to prove your case by adducing evidence.

You CAN FILE another IA to finally decide on documentary evidence depending on the period of the case and circumstances.

Interlocutory application has to be decided at its threshhold on its merit, much before evidence.

In a civil case Judgment / decree is passed after completion of pleadings, evidence of both parties and arguments.

Your question is based on some facts which you have not posted, prima facie it is just an examination hall quesiton paper, isn't it ?