無量壽經連義述文贊 2.216

2.216

經曰「黃金池者」至「彌覆水上」者，述云：此第三、池莊嚴也。前堂舍及此池，皆由第三十三願之所成也。

Regarding the sūtra saying from “as for the gold ponds” down to “completely covering the water,” the commentary states: This third is the adornment of the ponds. The previous lecture halls and these ponds are all brought about by the thirty-third vow.