With the Congress determined to move the Supreme Court against Rajya Sabha Chairman M Venkaiah Naidu rejecting the impeachment motion against Chief Justice of India Dipak Misra, Trinamool Congress chief Mamata Banerjee on Tuesday criticised impeachment bid as “wrong” and said she had cautioned Sonia Gandhi and Rahul Gandhi against the move. Finance Minister Arun Jaitley said it would be “suicidal” for the Congress to challenge the decision by the Rajya Sabha chairman, who defended his stand saying it was “timely and not hasty” as proper due diligence was done. The impeachment motion was signed by seven parties, but the Trinamool members had not. “We will move the Supreme Court against the rejection of our notice, but it will take some time,” Kapil Sibal said.