瑜伽論記 1.424

1.424

若依起世經說：梵王還滿六十小劫。彼云：世界初成時，初成初禪三天宮殿，欲界宮殿未有，爾時梵王已從上地生在梵宮，爾後方造欲界空居天等，即於成劫滿二十也。後至壞時至第二十劫，欲界火起已燒多時，梵王猶在，火勢經久垂至梵宮，梵王方去，是故於壞劫亦經二十劫，則具經六十劫，此與火等初成壞時，量位相當感故，大梵壽量一劫時定，三天三品修生不同，劫數故異。

If according to the Qishi jing, the Brahmā King actually completes sixty small kalpas. That text says: when the world first forms, it first forms the palaces of the three heavens of the First Dhyāna, while the palaces of the desire realm do not yet exist; at that time, the Brahmā King has already been born from the higher stage into the Brahmā palace, and only afterwards are the space-dwelling heavens of the desire realm, etc., constructed, which completes twenty [kalpas] during the kalpa of formation. Later, at the time of destruction, reaching the twentieth kalpa, when the fires of the desire realm have arisen and burned for a long time, the Brahmā King is still present; only when the fire has raged for long and is about to reach the Brahmā palace does the Brahmā King depart. Therefore, during the kalpa of destruction, he also undergoes twenty kalpas, thus completely undergoing sixty kalpas. Because this is evoked proportionally to the initial formation and destruction by fire, etc., the lifespan of Mahābrahmā for one kalpa is fixed in time; because the cultivation and rebirth in the three heavens have three grades that are not the same, the kalpa numbers are accordingly different.