大方廣佛華嚴經疏 17.5

17.5

三宗趣者，先約會以十住行德為宗，攝位德果為趣。二品，以嚴處請佛赴感為宗，根緣契合說法為趣。

Third, the central theme and purport: First, regarding the assembly, it takes the practices and virtues of the ten abodes as its central theme, and subsuming the virtues and fruits of the station as its purport. Second, as for the chapter, it takes adorning the place, inviting the Buddha, and responding to the stimulus as its central theme, and the matching of capacities and conditions to expound the Dharma as its purport.