Many monks do include it in the procedure. Panatipata veramani sikkhapadam samadiyami. There, then, are the five precepts. Silena sugatim yanti. People attain a happy state through sila.
People prosper through sila.
Silena nibbutim yanti. People attain peace through sila. Tasma silam visodhaye. Therefore, keep sila ever pure. Then they prostrate three times.