大方廣佛華嚴經疏 51.18

51.18

二分行位者，亦有四義：一束行成位，分成六分故。二總屬位收，以行並是位中行故。三總屬行，普賢行體不依位故。四一行遍六位，位位通修故。如此無礙，方為普賢行。然文正顯後二，以攬行成位，位虛行實故。故問答併舉，不分六番，意在此也。

Second, distinguishing practices and stations also has four meanings: First, binding the practices to form stations, dividing them into six divisions. Second, all being subsumed under stations, because the practices are all practices within the stations. Third, all belonging to practice, because the essence of Samantabhadra's practice does not rely on stations. Fourth, a single practice pervades the six stations, being cultivated throughout each and every station. Only with such non-obstruction does it become the practice of Samantabhadra. However, the text directly manifests the latter two, because in taking up practices to form stations, the stations are nominal while the practices are real. Therefore questions and answers are presented together without dividing into six rounds; the intent lies right here.