Mbh 12.318.1b

Those men, O king, who can no longer see images of themselves reflected in the eyes of others, have but one year to live. One, who, being endued with lustre loses it, or being endued with wisdom loses it,--indeed, one whose inward and outward nature is thus changed,--has but six months more to live. He, who disregards the deities, or quarrels with the Brahmanas, or one, who, being naturally of a dark complexion becomes pale of hue, has but six months more to live. One, who sees the lunar disc to have many holes like a spider's web, or one, who sees the solar disc to have similar holes has but one week more to live. One, who, when smelling fragrant scents in place of worship, perceives them to be as offensive as the scent of corpses, has but one week more to live. The depression of the nose or of the ears, the discolour of the teeth or of the eye, the loss of all consciousness, and the loss also of all animal heat, are symptoms indicating death that very day. If, without any perceptible cause a stream of tears suddenly flows from one's left eye, and if vapours be seen to issue from one's head, that is a sure indication that the man will die before that day expires. Knowing all these premonitory symptoms, the man of cleansed soul should day and night unite his soul with the Supreme Soul (in Samadhi). Thus should he go on till the day comes for his dissolution. If, however, instead of wishing to die he desires to live in this world, he casts off all enjoyments,--all scents and tastes,--O king, and lives on in abstinence. He thus conquers death by fixing his soul on the Supreme Soul. Indeed, the man, who is blessed with knowledge of the Soul, O monarch, practises the course of life recommended by the Sankhyas and conquers death by uniting his soul with the Supreme Soul.