Serial blasts had rocked Modi's 'Hunkar Rally' at the historic Gandhi Maidan on October 27, in which six persons were killed and 82 others sustained injuries.
Congress had criticised Modi for going ahead with the Patna rally despite the blasts, saying "after an event like this happens, you should give up whatever happens".
Union minister Salman Khurshid slammed Modi, saying that instead of attending to those injured in the blasts he went ahead with the rally.
"Should you not attend to people who were hurt? Should you not try to find out what has happened? He continued with his speech ....much worse....much worse," he had said.