佛制比丘六物圖 1.58

1.58

三者、族界，（謂一家中異食異業，亦有同別。各有住處，則名一界。若在二處及作食、便利等，眾處皆失。）

Third, the clan boundary; (meaning that within one household there are separate meals and separate livelihoods, which also have shared and distinct forms. If each has their own living quarters, it is called a single boundary. If [the robes and body] are in two places, or in common places such as food preparation or latrines, they are forfeited in all such cases.)