He was responding to senior Congress leader P Chidambaram and RJD leader Tejashwi Yadav, who had criticised the prime minister for his statement at an election rally at Kannauj.
At the rally on Saturday, Modi had said, "Mayawatiji, I am the most backward. I request with folded hands not to drag me into caste politics, 130 crore people are my family. This country did not know my caste till my detractors abused me. I am thankful to Mayawati ji, Akhilesh ji, the Congress people and the 'mahamilavatis' that they are discussing my caste. I believe that taking birth in a backward caste is an opportunity to serve the country."