The ya'nora kor was a Klingon rite exercised by the ghIntaq of a Great House and allowed them to question the decisions of the leader of the House. It could include family related matters or ones that directly impacted the standing of the house in the future. In 2370, K'mtar threatened to invoke the rite of ya'nora kor to take Alexander away from Worf and send him to the Klingon Training Academy on Ogat. (TNG episode: "Firstborn")