觀無量壽佛經義疏 3.18

3.18

"The Buddha said to Vaidehī: ‘Those who wish to contemplate that Buddha should give rise to the visualization, forming the idea of a lotus flower upon the ground of the seven jewels.’" The flower rests upon the ground, which shows that it is a platform seat and not a pond lotus. Second, individually listing the adornments, which has two parts: first, the petals; second, the flower calyx. First, the petals, which has six parts: first, color; second, veins; third, light; fourth, indicating the dimensions; fifth, revealing the number; sixth, explaining the pearl light. First, color.