大方廣佛華嚴經隨疏演義鈔 36.31

36.31

第五喻況玄旨中，疏「眾生含其前三」者，以業報二字是第四故，則初一含四。

In the fifth section, "Analogies and Figures for the Profound Purport", where the Commentary states, "'Sentient beings' encompasses the preceding three," it is because the two words "karmic retribution" are the fourth; hence the first encompasses the four.