“T his is the statute of the Torah that the L-rd commanded saying…” (Bamidbar 19:2)

“And Moshe became angry at the officers of the army….” (Bamidbar 31:14)

The Gemara in Pesachim (66b) tells us: Reish Lakish says whoever gets angry if he’s smart his wisdom leaves him.

This is one of the three times that Moshe got angry and forgot halachos as we see a few pesukim later (21): “And Elazar HaKohein said to the people of the army ‘This is the statute of the Torah that Hashem commanded Moshe.’ ” (Rav Chaim Shmuelevitz Sichos Mussar)