וַיֵּצֵ֤א הָֽאֶחָד֙ מֵֽאִתִּ֔י וָאֹמַ֕ר אַ֖ךְ טָרֹ֣ף טֹרָ֑ף וְלֹ֥א רְאִיתִ֖יו עַד־הֵֽנָּה׃
Y el uno salió de conmigo, y pienso de cierto que fué despedazado, y hasta ahora no le he visto;
Mishnah Berakhot
One who is praying and makes a mistake, it is a bad sign for him. And if he is the messenger of the congregation (the prayer leader) it is a bad sign for those who have sent him, because one’s messenger is equivalent to one’s self. They said about Rabbi Hanina ben Dosa that he used to pray for the sick and say, “This one will die, this one will live.” They said to him: “How do you know?” He replied: “If my prayer comes out fluently, I know that he is accepted, but if not, then I know that he is rejected.”