俱舍論頌疏論本 9.15

9.15

天首上三橫，地獄頭歸下者，第九行狀門。謂天中有首正上昇，如從坐起。人、鬼、傍生中有行相還如人等。地獄中有頭下足上。故有頌曰：「顛墜於地獄，足上頭歸下，由毀謗諸仙，樂寂修苦行。」此上所論，據人中死還生人趣。若通餘趣，行相不定。故《婆娑》云：「若地獄死還生地獄，不必頭下足上。若天中死還生天中，不必首上足下。若地獄死生於人趣，應首上昇。若天中死生於人趣，應頭歸下。」

"Celestial heads point upward, three are horizontal, hell-dwellers' heads go downward": this is the ninth topic, on the manner of movement. This means that the celestial intermediate existence ascends straight up with its head erect, like rising from a seated position. The movement of the intermediate existences of humans, ghosts, and animals is like that of humans and so forth. The intermediate existence of hell has its head down and feet up. Thus a verse says: "Falling headlong into hell, / Feet up and head pointing down, / Due to reviling the ṛṣis / Who delight in tranquility and practice austerities." What has been discussed above is based on dying among humans and being reborn back in the human destiny. If extended across other destinies, the manner of movement is variable. Thus the Vibhāṣā says: "If dying in hell and reborn back in hell, it is not necessarily head down and feet up. If dying among celestials and reborn back among celestials, it is not necessarily head up and feet down. If dying in hell and being reborn in the human destiny, it should ascend head upward. If dying among celestials and being reborn in the human destiny, it should go head downward."