請觀音經疏闡義鈔 2.59

2.59

「今中」下，正示圓智，乃名如海。「列名」者，雖歎勝德，不的顯名，莫知其人，故略出七人。「皆的約中道」者，約事則繁，就觀釋名足知大況。

From "now the middle" downward directly indicates the perfect wisdom, which is then named "like the ocean." "Listing names": although praising superior virtues, without explicitly revealing names one would not know the persons; hence seven persons are briefly set forth. "All explicitly in terms of the middle way": in terms of phenomena it would be cumbersome, but explaining the names through contemplation is sufficient to understand the general situation.