佛頂尊勝陀羅尼經教跡義記 2.197

2.197

述曰：第二、修敬歸依。文中有二意。一、行道；二、禮拜。言行道者，即遶佛七匝也。《提謂經》曰：「行道七匝者，以應七覺分，度七世父母也。」禮拜者，有其三品，如上所述。

Commentary: Second, cultivating reverence and taking refuge. Within the text there are two meanings: first, walking [in procession]; second, prostrating. Walking [in procession] refers to circumambulating the Buddha seven times. The Tiwei Sūtra states: "Walking seven times in procession corresponds to the seven limbs of awakening and delivers one's parents of seven lifetimes." As for prostrating, there are three grades, as described above.