Dear Himanshu Thakar,
You can find the exact prerequisites and information about the MIBAS program as well as the documents you need to hand in here:
www.wiso.uni-hamburg.de/en/studienbuero-sozialoekonomie/studiengaenge/ma-mibas.html
www.wiso.uni-hamburg.de/en/studienbuero-sozialoekonomie/a ...