New Delhi: Rajya Sabha Member Raghav Chadha will introduce a private member bill in the parliament on Friday, seeking legal guarantee on MSP under MSP Guarantee Bill.Chadha said that the BJP government has backstabbed the farmers and now is not willing to give legal guarantee on MSP but he is fighting for their rights and will introduce a Private member's bill in the Rajya Sabha today, forcing the government to hold talks on the issue and implement the MSP Bill.