The 192nd mitzvah is that we are commanded that when our camps go out to war, we must prepare a place outside the camp for people to relieve themselves. People should not relieve themselves just anywhere among the tents as other nations do.

The source of this commandment is G‑d's statement1 (exalted be He), "You must have a designated place outside the camp...."

The Sifra2 says, "The word yad means a designated place, as it is written,3 'He set up for him a designated place (yad).' "