俱舍論頌疏論本 12.42

12.42

如次內災等者，謂初靜慮尋、伺為內災，能燒煩惱心，等外火災故。第二靜慮喜受為內災，與輕安俱潤身如水，等外水災故。第三靜慮動息為內災，息即是風，等外風災故。下三靜慮有如是內災，遭是外災壞。問：「何緣不立地亦以為災耶？」答：「以器世間即是地故，但可火等與地相違，不可說言地還違地。」

'Respectively, they are equal to the internal calamities': applied thought and discursive thought are the internal calamities of the first dhyāna, because they can burn the mind troubled by defilement, being equal to the external calamity of fire. The feeling of joy is the internal calamity of the second dhyāna, which, together with pliancy, moistens the body like water, being equal to the external calamity of water. The movement of breath is the internal calamity of the third dhyāna, for breath is wind, being equal to the external calamity of wind. The lower three dhyānas have such internal calamities and therefore suffer destruction by these external calamities. Question: 'For what reason is earth not also established as a calamity?' Answer: 'Because the physical world is itself earth; it is only admissible that fire and the like conflict with earth, but one cannot say that earth conflicts with earth.'