佛遺教經論疏節要 1.39

1.39

上首眷屬人位差別。諸者，不一也。學居師後故言弟，解從師生故稱子。略說法要者，世出世間法位差別。下文第二分即世間法，從三至七皆出世法。序分竟。

The distinction in the status of persons regarding the foremost assembly and retinue: "the" (zhu) means not one. Learning stands behind the master, hence they are called "younger brothers" (di); understanding is born from the master, hence they are called "sons" (zi). Regarding "briefly expounded the essentials of the Dharma": this is the distinction in the status of worldly and transworldly dharmas. The second division below is the worldly dharmas; from the third to the seventh, all are transworldly dharmas. The division on the preface ends here.