佛說觀佛三昧海經 4.50

4.50

When the Buddha had spoken this, his royal father immediately arose from his seat, adjusted his robes, paid homage to the Buddha, circumambulated the Buddha seven times, knelt with palms joined, and addressed the Buddha, saying: "Bhagavat! Everyone has seen the bodily appearance of the Tathāgata. Yet within the Buddha's mind, what spheres are there? What appearances are there? What practices are performed? What is it that the Buddha's mind contemplates? What does the light of the Buddha's mind resemble?"