PM Modi put out a series of tweets, condemning the comments of Sam Pitroda, who heads the Congress's overseas unit.
"The most trusted advisor and guide of the Congress President has kick-started the Pakistan National Day celebrations on behalf of the Congress, ironically by demeaning India's armed forces. Shame," PM Modi tweeted.
He was responding to Sam Pitroda's comment on reports of 300 terrorists being killed by the Indian Air Force strikes on a terror camp in Balakot on February 26.
"Give me more facts and prove it," Mr Pitroda had told news agency ANI, also questioning whether "blaming every citizen" of Pakistan was the right way to respond to attacks like Pulwama.
"Eight people (26/11 terrorists) come and do something, you don't jump on the entire nation (Pakistan). Naive to assume that just because some people came here and attacked, every citizen of that nation is to be blamed. I don't believe in that way," said Mr Pitroda.