Rabbi Nehuniah ben Haqanah used to recite a short prayer when he entered the study hall and when he exited. They said to him, “What is the nature of this prayer?” He said to them, “When I enter, I pray that I will cause no offense. And when I exit, I give thanks for my portion.” When he enters [the study hall] what does he say? “May it be thy will, Lord my God, God of my fathers that I shall not be angry with my associates, and that my associates shall not be angry with me; that we not declare the clean to be unclean, that we not declare the unclean to be clean; that we not declare the permissible to be forbidden, that we not declare the forbidden to be permissible; lest I find myself put to shame in this world and in the world to come [for rendering a wrong decision]"... Rabbi Pedat in the name of Rabbi Jacob bar Idi, “Rabbi Eleazar used to recite three prayers after his recitation of the Prayer [of Eighteen]. What did he say? ‘May it be thy will, Lord my God, and God of my fathers, that no person come to hate us, nor that we come to hate any person, and that no person come to envy us, not that we come to envy any person. And let [the study of] your Torah be our occupation all the days of our lives. And let our words be supplications before you.’"