大乘百法明門論開宗義決 1.78

1.78

初通一切異生相續等者。言相續者謂即蘊身。今舉蘊身故言相續。或依於蘊方得相續。

Regarding 'Initially pervading the continuum of all ordinary beings', and so forth: 'continuum' refers to the body of aggregates. Here the body of aggregates is cited, and so it is called a continuum; or, it achieves continuity only by relying on the aggregates.