般若波羅蜜多心經贊 1.97

1.97

第四、常、無常者，問：「受用、變化既有生滅，云何經說諸佛身常？」答：「由二所依法身常故，受用法樂無休廢，故數數現化，無斷絕故，如常受樂、如常施食故說名常。」

Fourth, regarding permanence and impermanence: Question: "Since enjoyment and transformation have arising and cessation, why do the sūtras state that the bodies of the buddhas are permanent?" Answer: "Because the dharma body on which the two rely is permanent, because the enjoyment of the pleasure of the Dharma never ceases, and because manifestations of transformations are repeatedly displayed without interruption, it is called permanent just as one 'constantly receives pleasure' or 'constantly provides food.'"