Ben Aryeh on Mishneh Torah, Vessels of the Sanctuary and Those who Serve Therein Chapter 3
Can copy this into an AI, or connect the whole library to your assistant. For deeper learning, you can directly use the original seforim, sites, and apps.
בכ"מ: מחלק אנשי משמר שלא לשבעה בתי אבות. נ"ב צ"ל משמר שלו לשבעה כו':