Pertinently, JD(U) is a former ally of BJP-led National Democratic Alliance (NDA).
"Through yesterday's announcement, the BJP has made it clear that they are not interested in uniting the opposition parties. Rather, they are aiming to divide communities and weaken the country," Kumar said.
Meanwhile, the Congress called Modi's nimination a 'mere hype'.
"Modi's image is an inflated one and the announcement is nothing more than a mere hype," Congress leader and Union Health Minister Ghulam Nabi Azad said.
Minister of State for Home Affairs RPN Singh said: "Modi a divisive figure. Naming such a divisive figure can't give BJP a head start."
He said, "We won't comment on BJP's internal matters. But the Congress will follow its tradition of choosing its leader after elections."
With Modi been declared the party's prime ministerial candidate, BJP president Rajnath Singh on Saturday said the NDA will have the numbers to form the government in 2014.
"We will have the numbers to form the government and we want to assure our allies that when the government is formed, they will have full participation," Rajnath Singh told CNN-IBN.
A day after the BJP announced Modi as its prime ministerial candidate amid opposition by LK Advani, senior leader Sushma Swaraj on Saturday met the party patriarch at his residence here.
Swaraj, along with BJP leader Ananth Kumar met Advani for about 90 minutes to pacify him, said party sources.
However, when asked, Swaraj downplayed Advani's disapproval of Modi and said: "No one is upset."
As the BJP on Friday named Modi as its prime ministerial candidate, Advani expressed his disappointment to Rajnath Singh over the issue.
Ending all speculations and signalling the end of Advani era, the BJP on expected lines named Modi as the PM candidate of the party for the upcoming Lok Sabha elections.
"The BJP is having a tradition to announce its Prime Ministerial candidate. The Parliamentary Board of the BJP met today and decided that Narendra Modi will be our PM candidate for the next Lok Sabha elections," declared Rajnath Singh here at the BJP headquarters amid jubilation by the party workers.
In a letter sent to Rajnath Singh shortly before the parliamentary board met, Advani wrote, "I had told you I would consider whether to attend the meeting... I think it's best if I don't."
He said he is disappointed with the way the party is conducted.
--IBNS (Posted on 14-09-2013)