觀無量壽佛經疏 3.9

3.9

"Third, he wished to cause sentient beings to recognize that the various signs of adornment and radiance of Amitābha's primary and circumstantial retributions illuminate inwardly and outwardly, exceeding this sun hundreds of thousands of myriad times over. If practitioners do not recognize the signs of radiance of that realm, they should look upon the signs of radiance of this sun disk. Whether walking, standing, sitting, or lying down, prostrating, reciting, or mindfully recollecting, they should always maintain this understanding. Before long, they will attain the concentrated mind and see the affairs, bliss, and adornments of that Pure Land. It is for this reason that the World-Honoured One first taught the practice of the sun contemplation."