Patna: Congress vice-president Rahul Gandhi is understood to have warned his party leaders of action not to continue to target Bihar Chief Minister Nitish Kumar, to smooth ruffled feathers of the crucial ally.

The JD(U), of which Nitish Kumar is the president, reciprocated by hinting that it would go with the Opposition in the upcoming vice-presidential election.

Media reports said Gandhi intervened in favour of Nitish Kumar and instructed party leaders not to criticise the Bihar chief minister.

Bihar Congress president Ashok Choudhary confirmed to PTI that he had a meeting with Rahul Gandhi earlier this week in Delhi but refused to divulge what transpired there.

The reports said that Rahul Gandhi, during his meeting with Choudhary, hinted that action would be taken against leaders issuing statements against Nitish Kumar.

Rahul Gandhi was absent when the Congress-JD(U) spat broke out.

The sparring began after senior Congress leader Ghulam Nabi Azad attacked Nitish Kumar for breaking ranks with the opposition and supporting NDA's pick Ram Nath Kovind for the July 17 presidential poll.

He had alleged that Nitish Kumar wanted to ensure the defeat of 'Bihar ki Beti' Meira Kumar, who is the opposition's candidate for the poll.

People having one ideology take one decision while those with many ideologies take different decisions, Azad had said, apparently referring to JD (U)'s long association with the BJP.

Some state leaders of the Congress subsequently attacked Nitish Kumar, who returned the fire by questioning Congress's shift from the ideologies of Mahatama Gandhi and Jawaharlal Nehru.

The JD(U) chief made it clear that his party was no "pichlagoo" (camp follower) of any party.

The war of words between the JD(U) and the Congress threatened the Grand Alliance government in Bihar, which includes the Congress and the RJD of Lalu Prasad.

Nitish Kumar's bonding with Rahul Gandhi is well known in political circles.

It is also known that it was at Rahul Gandhi's intervention that the Congress had put pressure on Lalu Prasad to announce Nitish Kumar as the chief ministerial candidate on the eve of the 2015 Bihar Assembly poll.

The patch up between the two parties seems to have come at the right time as the combined opposition presidential candidate Meira Kumar is arriving in Bihar on Thursday on a three-day visit.

She is scheduled to meet Congress and RJD legislators and parliamentarians. However, no meeting with chief minister Nitish Kumar has been fixed.

Reacting positively to the Congress gesture, JD(U) has hinted that it could side with the opposition in the August vice-presidential poll.

"If our party is invited to participate in a meeting of the opposition to discuss the issue of vice-presidential election, we will certainly attend," JD(U) national spokesman KC Tyagi told PTI over the phone.

JD(U) would support the united opposition's candidate in the vice-president election, provided it is invited and consulted, he said.

Asked who would represent JD(U) in the proposed opposition's meeting, Tyagi said that it would be decided by Kumar and senior party leader Sharad Yadav.

Choudhary, who is also the education minister in the Nitish Kumar-led government, told PTI, "We expect JD(U) would be with us in the vice-presidential poll."