大方廣佛華嚴經隨疏演義鈔 36.10

36.10

疏「善了無生」者，即七地，經云「了法無生名般若」是也。

The commentary's statement, "skillfully comprehending non-arising", is the Seventh Ground; the sūtra says: "Comprehending dharmas as unarisen is called prajñā," which is this.