觀無量壽佛經義疏 2.109

2.109

「『分為十四支，一一支作七寶妙色，黃金為𤦲。』」十四，支即是渠道。四、明渠底。

"‘It is divided into fourteen streams, each stream displaying the wondrous colors of the seven jewels, with gold forming its banks.’" Fourteen streams refers to the waterways. Fourth, explaining the bed of the channels.