大方廣佛華嚴經疏 6.28

6.28

Third, explaining the ten dharmas of the prose section for the third dhyāna [heavens]. In the first approach, being tranquil yet universally manifesting is called "skillful means." The expounding itself is the path, because through expounding one enters the Buddha's ocean of liberation. This attains liberation from the obstacle of having obstruction between essence and function. Furthermore, the word "skillful means" also applies to the skillful means for entering liberation.