The Supreme Court on Monday dismissed a plea filed by Sebi against a Securities Appellate Tribunal order which set aside the penalty imposed by the market regulator on RIL chairman Mukesh Ambani and two other entities in a case related to alleged manipulative trading in shares of the erstwhile Reliance Petroleum Ltd (RPL) in November 2007.A bench of Justices J B Pardiwala and R Mahadevan said it was not inclined to interfere with the order passed by SAT.