Rambam writes that the one who would oversee the guards of the Beis Hamikdash would hit anyone who fell asleep on the job. But isn’t it forbidden to hit someone? Learn from the great Hungarian Rov, R. Yeshaya Zilbershtein.

Sources: Rambam, Maasei l’Melech, Shulchan Aruch HaRav and Tanya.