Prime Minister Narendra Modi on Wednesday accused opposition parties of denying backward castes their rights by blocking the passage of a bill, which accords constitutional status to the OBC commission, in the Rajya Sabha.

Modi expressed surprise at the stand of the opposition as members of all parties had been urging him for bringing the legislation, the Bharatiya Janata Party said in a statement after its OBC MPs thanked him in Parliament for passage of the bill in the Lok Sabha.

"The bill was passed unanimously in the Lok Sabha but blocked in the Rajya Sabha (by opposition parties). Denying the backward sections their rights with such negative politics is regrettable," Modi told them.

He also asked the BJP OBC MPs to reach out to their counterparts in other parties and convince them to support the landmark legislation.

As an MP it is your moral responsibility to make the people from backward classes aware about this legislation and organise programmes for the same, Modi was quoted as having told them.

Noting that the satisfaction one gets by working for poor is uncomparable to anything else, Modi told party MPs that people from the backward castes have self-respect and would never forget generosity.

Emphasising on the need to ensure easy credit for the poor, the prime minister said to keep these people away from the clutches of moneylenders the MPs should promote Bhim application among people.

The OBC MPs of the BJP had gathered to thank the Prime Minister for passage of the bill in the Lok Sabha which seeks to create National Commission for Socially and Educationally Backward Classes, with judicial powers and constitutional status.

Modi also asked the MPs to make backward classes aware about the bill and how it would be a game changer in their lives.

The Rajya Sabha had on Tuesday referred the Constitution (123rd) Amendment Bill, 2017, which has already been passed by the Lok Sabha, to the Select Committee under pressure from the opposition. The ruling NDA does not have a majority in the House.

The committee that will examine the bill will be headed by BJP member Bhupender Yadav. It has been asked to submit its report by the last day of the first week of the next session.

The 25-member Rajya Sabha Select Committee includes Sharad Yadav, Ram Gopal Yadav, Satish Mishra and Praful Patel.

According to the bill, the new body NCSEBC will replace the National Commission for Backward Classes.

Once the bill becomes law, states will not be able to add or delete castes from the backward classes' list without Parliament's approval.

IMAGE: Prime Minister Narendra Modi being greeted by Parliamentary Affairs Minister Ananth Kumar at a function organised at Parliament in New Delhi on Wednesday to thank him for passage of the OBC bill in Lok Sabha. Photograph: Manvender Vashist/PTI Photo