Midrash su Ezechiele 23:43

(Fol. 83b) It happened once that R. Meir, R. Juda and R. Jose were traveling on the road. R. Meir paid attention to the names of his innkeepers, but the other two did not pay any attention to it. When they arrived at an inn, they asked the host: "What is thy name?" "Kidor," he replied. "I infer from his name that he is a wicked man," said R. Meir, "because it is written (Deut. 32, 20) Ki dor tah-puchoth hema — (for a perverse generation are they [by a play of words] ) ." R. Juda and R. Jose intrusted him with their purses for safe-keeping over the Sabbath. R. Meir, however, did not, but put his in a pitcher and buried it alongside the head of the innkeeper's father's grave. His father appeared in a dream to the innkeeper, saying: "Go and take away the purse that is over my head." Kidor rose in the morning, and told it to R. Meir. He said to him: "A dream which occurs on the eve of the Sabbath has no significance." Nevertheless, R. Meir kept watch over his money the whole day, and at nightfall he removed it. On the morrow, when R. Juda and R. Jose said to the innkeeper: "Give us our purses." He replied to them: "You have never given them to me." R. Meir then said to them: "Why did you not pay attention to names?" "Why has the Master not told us about it?" replied they. He said: "I only say that such men ought to be suspected, but I could not say it with certainty." Noticing that he [Kidor] had lentils on his mustache they took him to a store and intoxicated him with wine. In the meantime they went to his wife, and told her that her husband had instructed her that she should give them their money; and to prove their statement they told her that on this very day they ate lentils. She returned their purses to them, and they went away. He (Kidor) then went and murdered his wife And this is meant by the statement of the Mishnah: "The failure to wash his hands before the meal caused a man to eat pork [for he was token to be a gentile]; and water, after the meal, caused one to obecome a murderer [refering to Kidor]." Consequently all of them began to pay strict attention to the name [of a person]. Later when they arrived at an inn whose keeper's name was Bala, they refused to stop there. They said this must be a wicked man, for it is written (Ezek. 23, 43) And Bala is an adulterer.