觀無量壽佛經義疏 2.116

2.116

"‘This is the visualization of the water of eight qualities, termed the fifth contemplation.’" The eight qualities are: first, lightness; second, purity; third, coolness; fourth, softness; fifth, deliciousness; sixth, free of foul odor; seventh, soothing when drunk; eighth, causing no distress after drinking. They do not exceed the four sense-objects of form, scent, taste, and touch.