The party also accused Modi of misleading the people of Gujarat on the contributions of Jawaharlal Nehru.
"The Prime Minister has said the country's first Prime Minister had not done anything for Gujarat. It is wrong and far from the truth. We condemn it," party spokesperson Anand Sharma told the media here.
The Prime Minister suffers from an "unhealthy mentality, which is an issue of national concern", Sharma said.
"He feels that nothing happened in Gujarat and the country before he came," he said.
"Unhealthy mentality is when a person says the universe was not created before me, India did not have an identity before I came... He (Modi) always says this is happening for the first time.
"He needs to be told that India became a nuclear power in 1974, we went to space, Chandrayaan and Mangalyaan had already been launched... India was recognised worldwide.
"If he feels nothing happened before he came, it is the responsibility of the opposition to correct him. Whatever he is saying is untrue. The Bharatiya Janata Party (BJP) is very nervous. They are rattled over the increasing support for the Congress in Gujarat."
Sharma countered the BJP charge of dynastic politics in the Congress, saying the last member of the Nehru-Gandhi family to take oath of an important post was when Rajiv Gandhi became the Prime Minister in 1984.
"It means 32-33 years have gone... For 10 years, Congress was in power and I need to remind him (Modi) that Rahul Gandhi is an elected member of Parliament.
"He has forgotten that the Congress gave Prime Ministers like Lal Bahadur Shastri and Manmohan Singh who came from humble backgrounds."
He added: "The Congress has never told the BJP who it should elect as its leader. The Prime Minister should stop worrying about the Congress and focus on his party instead."
The Prime Minister was trying to mislead the people of Gujarat by giving wrong statements and trying to lure the voters, Sharma said.
"He (Modi) should not give certificates of honesty to his own government."
Attcking the Modi government for delaying the winter session of Parliament, Sharma said: "The Modi government is running away from accountability. That is why the Prime Minister never convened Parliament ahead of the Gujarat polls."