Yogācārabhūmi Śāstra, Volume 10 (Twelve Links of Dependent Origination)

（四）Original text: 昏昧云何。谓卧威仪位。数重睡眠。羸劣云何。谓即于此位无力速觉。损减云何。谓念慧衰退。衰退云何。谓念慧劣故。至于善法不能现行。诸根耄熟云何。谓身体尪羸。功用破坏云何。谓彼于境不复明利。诸行朽故云何。谓彼于后将欲终时。其形腐败云何。谓寿量将尽。身形临坏。于诸事业。无复功能。 

Explanation: What does "dullness" mean? Dullness refers to the body being in a lying posture while the mind is very drowsy and sleep is heavy. What does "weakness" mean? Weakness means lacking the strength to quickly perceive, with insufficient mental power and insufficient capacity for action. What is "decline"? Decline means that both mindfulness and the power of wisdom have deteriorated. What does "deterioration" mean? Deterioration means that because both the power of mindfulness and the power of wisdom have become inferior, wholesome dharmas can no longer manifest. What does "the faculties becoming aged and decrepit" mean? This refers to the body becoming thin and frail. What does "loss of function" mean? It means one is no longer sharp and quick with respect to sense objects. What does "the volitional formations becoming decayed" mean? It means that all bodily, verbal, and mental actions have declined, and death will come before long. What does "the form becoming corrupted" mean? It means that the lifespan is about to end, the body's form is on the verge of breaking down, and one no longer has the ability to carry out the undertakings one wishes to accomplish. 

Original text: 此老略义者。谓依止变坏。须发变坏。充悦变坏。火力变坏。无病变坏。色相变坏。威仪变坏。无色诸根变坏。有色诸根变坏。时分已过。寿量将尽。略义应知。彼彼有情云何。谓那落迦等。有情种类云何。谓即彼一切。终云何。谓诸有情离解支节而死。尽云何。谓诸有情由解支节而死。 

Explanation: The general meaning of aging is: the bodily faculty upon which one depends deteriorates; the hair and beard turn gray and deteriorate; the mental state deteriorates; the body's internal fire weakens; physical health deteriorates; the appearance of the physical body deteriorates; the deportment of walking, standing, sitting, and lying down declines; the formless manas deteriorates; the five faculties that have form deteriorate; the time of living is nearly exhausted; and the lifespan is about to reach its end. How does the manas deteriorate? For example, the appearance of various hysterical disorders, mental illnesses, psychological impediments, and so forth. What are "those various sentient beings"? This refers to beings of the six realms, such as those in the hells (naraka). What does "the kinds of sentient beings" mean? It means all of those beings without exception. What is "ending"? Ending means that sentient beings die without the joints and limbs disarticulating. What is "exhaustion"? Exhaustion means that sentient beings die through the disarticulation of the joints and limbs. 

Original text: 坏云何。谓识离身。没云何。谓诸色根灭。舍寿云何。谓气将尽位。舍暖云何。谓不动位弃舍诸蕴。命根谢灭云何。谓时死。死云何。谓遇横缘非时而死。时运尽云何。谓初死未久位。又死魔业名时运尽。此死略义者。谓若死若死法。若死差别。若死后位。是名略义。如是名为缘起差别应知。 

Explanation: What does "dissolution" mean? It means that all eight consciousnesses have left the body. What does "vanishing" mean? It means that all the five faculties that have form have ceased. What does "relinquishing the lifespan" mean? It means the stage when the breath is about to be exhausted. What does "relinquishing warmth" mean? It means that the five aggregates have come to a standstill, motionless, and are all relinquished. What does "the extinction of the life faculty" mean? It means dying at the appointed time. What does "death" mean? It means encountering extremely harsh adverse conditions and dying before the lifespan is complete—that is, dying an untimely death. What does "the exhaustion of one's allotted time" mean? It means the stage shortly after death has just occurred; the karma of the māra of death is also called the exhaustion of one's allotted time. The general meaning of death includes dying itself, includes how one dies, includes the various differentiated aspects of death, and includes the destination after death. This general meaning of death is also called the differentiated links of dependent origination of death.