Musar su Numeri 31:14

ויקצוף משה על פקודי החיל . "Moses was angry at the commanders of the army" (31,14). How could Moses be angry at these commanders seeing he had not commanded them to kill the women? There was no need to issue such a command since common sense should have told the commanders that the women who had been the chief seducers were to be the targets of that expedition. We find that even a Bileam acknowledges guilt when confronted by an angel whose presence he had not been aware of, and he says: חטאתי כי לא ידעתי, "I have sinned though I was unaware" (Numbers 22,34). Failure to use one's common sense is culpable. I have elaborated on this in my commentary on the last chapter of tractate Sanhedrin.

Anger leads to mistakes. Who is a greater man than Moses, our teacher? Moses, upon him be peace, was angry in three places, and he made what would generally be termed "mistakes". As it is said : "And he was angry with Eleazar and with Ithamar" (Lev. 10:16), and it is written : "Why did you not eat the sin-offering in the sacred area?" (Lev. 10:17). And it is said : "Listen, you rebels" (Num. 20:10) and it is said : "And he struck the rock" (Ib. : 11). And it is said : "Moses became angry with the commanders of the army" (Num. 31:14), and it is written : "And Eleazar the priest said to the troops who had taken part in the fighting This is the ritual law' " (Num. 31:21). Which teaches that Moses forgot the law (while angry) (Leviticus Rabbah 13:1). And so, you can understand that if these things happened to Moses peace be upon him, when he was angry, what can happen to fools who are angry! And therefore Solomon said, "Be not hasty in thy spirit to be angry" (Eccl. 7:9).