"It is regrettable that the chief minister has taken support of Congress to keep the JD(U) government afloat in Bihar after knowing well that it the same party which had tried to suppress democracy by imposing emergency in the country on June 25, 1975," Modi said at a function to mark imposition of emergency 38 years ago.
Criticising Kumar for allegedly betraying the mandate for NDA in two consecutive assembly polls, he said the people of Bihar had voted on the development and good governance and not on the issue of the country's next prime minister.
"Congress has not lost an iota of its dictatorial and repressive attitude and yet the chief minister has chosen to take its support to stick to power in Bihar," he said without naming Kumar.
He(Kumar) had let go his life time "political capital in one stroke" by aligning with the Congress, against whose ideology he had built his political career, the BJP leader said.