Addressing party workers here at the BJP headquarters, Shah also hit out at opposition, saying the 2019 mandate has buried the politics of casteism, dynasty and appeasement and is "a victory of nationalism".
"Modiji is the 'mahanayak' of the BJP's grand victory. BJP's victory is most historical after Independence. This is victory of every workers of the party. This is victory of BJP government's policy of the 'Sabka Sath, Sabka Vikas' and ofcourse, it is victory of popularity of Modiji," Shah said amid chants of "Modi-Modi" and "Bharat Mata Ki Jai".
"The opposition's defeat and BJP's emphatic victory is also against those parties promoting the ideology of 'tukde-tukde' gang. It is victory of nationalism," he said.
Prime Minister Narendra Modi, several union ministers and senior leaders were also present on the occasion.
Hitting out at the opposition parties for forming alliances to defeat Modi, Shah said that BJP was fighting for 50 per cent votes and today the party has garnered over 50 per cent vote share in 17 states including Uttar Pradesh and Bihar.
"I had told party workers that they will have to get on the field to fight the battle of 50 per cent. I can proudly say that in 17 states, people blessed us with more than 50 per cent votes. On the other hand, the Congress faced a crushing defeat and it could not even open its account in 17 states," he said.
He said that the BJP's tremendous victory reflects that there will be no significance of of the parties promoting politics of casteism, appeasement and dynasty in the days to come.
"In last 30 years, the Congress and other opposition parties did the politics of casteism, dynasty and appeasement but with hard work of party workers and the Prime Minister, this election has buried these ills in politics.
"In Uttar Pradesh, we won 60 seats. The mandate is a befitting reply on those parties promoting politics of dynasty, casteism and appeasement," he said.
Taking a swipe at former Andhra Pradesh Chief Minister Chandrababu Naidu, who was in the forefront of uniting the opposition parties against the BJP, he said if he would have spent that much of time in his state, he could have succeeded in opening his account.
Shah also congratulated the victors of the Odisha, Andhra Pradesh and Sikkim Assembly bypolls.
Hitting out at West Bengal's ruling Trinamool Congress, Shah said despite so many atrocities, the BJP won 18 seats in the state and also bagged four of the five Assembly constituencies which went to bypolls.
"It shows that in the coming days, the BJP is going to establish its domination in Bengal," he said.
( With inputs from IANS )