Else, warns rebel party MLA, the RJD will split.
The announcement comes amid rumours that Tej Pratap would be causing a split in the party.
Yadav said all parties have joined hands against the BJP in the Bihar assembly, and added "now this is going to be replicated across the whole country".
RJD leaders attacked PM Modi and CM Nitish Kumar, alleging that it was a malicious exercise.
'Nitish does not want to talk about development, unemployment, education, health infrastructure and poverty'
The Congress is a national party with a pan-India presence and it is quite natural that it should be the fulcrum of any national coalition against the Bharatiya Janata Party-led National Democratic Alliance, Rashtriya Janata Dal leader Tejashwi Yadav said on Sunday.
JMM leader Hemant Soren was sworn in as the 14th chief minister of Jharkhand in a grand ceremony in Ranchi, amid the presence of a galaxy of INDIA bloc leaders. This is Soren's fourth stint as chief minister. The JMM-led alliance won a majority in the recent assembly polls, securing 56 seats in the 81-member assembly.
'Laluji personally telephoned several Opposition leaders to attend the meeting.'
The votes for the state assembly polls will be counted on November 10. Prasad is in judicial custody in Jharkhand capital Ranchi after his conviction in fodder scam cases. He was recently granted bail by the Jharkhand High Court in the case related to Chaibasa treasury but could not come out of jail as his bail plea in another case of fraudulent withdrawals from Dumka treasury is being heard.
Yadav also called for firming up of an Opposition alliance to take on the BJP in the 2024 general elections, suggesting that the Congress must focus on over 200 seats on which it is in direct fight with the saffron party, while taking a 'backseat' in states where regional parties are a formidable force.
Most JD-U ministers favour a return to the BJP-led NDA ahead of the Lok Sabha elections.
Bihar Chief Minister Nitish Kumar on Saturday appeared all set to make his second political volte face in less than three years, with a highly-placed source close to Kumar saying that the Janata Dal-United president is likely to tender his resignation by Sunday morning.
Yadav scion also promised to scrap the notification in Bihar chief minister's tenure of the retirement of government employees at the age of 50.
The 33-year-old, who steered his party to an impressive show in the Bihar assembly polls last year thereby emerging out of the shadow of his father Lalu Prasad, underscored that the opposition needed to bring in "dhaar" (edge) and "nayaapan" (novelty) in its electoral issues.
"This is not a manifesto, it is our pledge to bring a change which is set to become true. Every sector has been taken into consideration while preparing this manifesto so that we can make Bihar a happy, better and prosperous state," Tejashwi Yadav said while releasing vision document.
New faces may, however, be inducted in the council of ministers from the allies Rashtriya Janata Dal and the Congress, he told reporters during his visit to Madhubani on Wednesday as part of his 'Samadhan Yatra'.
The RJD leader said the coming to power of the Mahagathbandhan government with the JD-U, the RJD, the Congress and other parties uniting "augurs well for opposition unity".
Fourteen people, including 10 polling personnel, have died due to heatstroke in Bihar in the last 24 hours, officials said on Friday afternoon.
Shukla claimed that the current Nitish Kumar-led dispensation would be ousted after the elections and people have started protesting against the ruling alliance leaders in public meetings.
Rahul Gandhi has spoken to Nitish Kumar and Lalu Yadav about the Begusarai seat, but the CPI is unwilling to give up the seat.
Lok Janshakti Party MP Mehboob Ali Kaiser, the lone Muslim to have been elected to the Lok Sabha from the Bharatiya Janata Party-led National Democratic Alliance in Bihar, joined the Rashtriya Janata Dal on Sunday, in a shot in the arm for the opposition party amid the elections.
In the tweet, Yadav had claimed that the result in the assembly segment of Araria district proved that Kumar owed the success of his party in 2015 assembly polls to the alliance with the RJD and not the other way round.
Nitish Kumar, once seen as a potential rival to Prime Minister Narendra Modi, broke ranks with the Bharatiya Janata Party-led National Democratic Alliance coalition on Tuesday to stake claim as head of the rival 'Mahagathbandhan' (Grand Alliance) to be the chief minister of Bihar for the eighth time.
A portion of an under-construction bridge in Bihar, which was being 'dismantled', crashed into the river Ganges river on Saturday, officials said.
'We will be happy if Nitishji becomes convenor of INDIA.'
Union minister Giriraj Singh on Saturday claimed that Bihar Chief Minister Nitish Kumar's Janata Dal-United and its ally Rashtriya Janata Dal, founded and headed by Lalu Prasad Yadav, were heading for a merger.
Both Raghopur and Hasanpur seats will go to polls in the second phase of Bihar elections, on November 3. Notification has already been issued for phase-2 and nomination filing is currently underway.
While politicians and pundits speculate a strong possibility of their coming together, the two young leaders, however, told prying journalists their meeting was a result of "family relations" that went back to ties shared by their fathers.
Portfolios were on Tuesday allocated in the new Bihar cabinet headed by Chief Minister Nitish Kumar who, predictably, retained the all-important home department which helps him keep direct control on the state police.
RJD president Lalu Prasad's daughter Rohini Acharya has entered the fray to wrest back her father's erstwhile pocket borough.
The father of Bengaluru techie Atul Subhash, who died by suicide recently, on Sunday called for strict punishment for those who 'harassed' his son, asserting that his ashes will not be immersed till justice is served.
One person was killed and three others injured in post-poll violence in Bihar's Saran district on Tuesday morning, police said.
Old-timers seem not impressed with the idea of dropping from the RJD poster its jailed supremo who is acknowledged, across party lines, as the biggest crowd puller ever seen in Bihar's poitical arena.
Various indicators make it amply clear that there are grave challenges facing the new government of Chief Minister Nitish Kumar, reports Indivjal Dhasmana.
A livid Bihar Chief Minister Nitish Kumar on Wednesday asked a representative of a private company to expedite a road project in Patna and even offered to touch his feet to speed it up.
Addressing a press conference barely a few hours before the campaign for the final phase of the elections came to a close, Paswan reiterated that the LJP will do well despite having gone solo in the elections and asserted, "We will help the BJP form the next government."
Kumar's statement come hours after, Tejashwi took to Twitter daring the chief minister to swear on an affidavit that his son will never enter politics.
'Lalu is Lalu. His presence in the election campaign will make a difference for the Mahagathbandhan.'
Tejashwi Yadav on Friday called out Union Minister Giriraj Singh for sharing an "edited video" of an interview to suggest that the young Rashtriya Janata Dal leader was going back on his promise to create 10 lakh jobs in the state.
The RJD leader said he was being treated for anterior cruciate ligament (ACL) injury during the past month.