無量壽經連義述文贊 2.62

2.62

經曰「詣世自在王」至「長跪合掌」者，述云：此第三、歎佛起願。有三：初、身禮；次、語歎；後、自誓。此初也。稽者至也，首者頭也。至頭於地，以尊接足，故云稽首。三匝者，即標如來修三德也。

On the passage where the sūtra states, "Approached Lokeśvararāja..." up to "knelt on both knees, placed his palms together": The commentary states: This is, thirdly, praising the Buddha and giving rise to vows. There are three parts: first, physical prostration; next, verbal praise; finally, taking vows. This is the first. Ji means "to reach"; shou means "the head." Touching the head to the ground to receive the feet with reverence is called "prostrating the head" (jishou). Circumambulating three times indicates the Tathāgata's cultivation of the three virtues.