Tao Te Ching Chapter 50
Out of life, death enters.
The companions (organs) of life are thirteen;
The companions (organs) of death are (also) thirteen.
What send man to death in this life are also (these) thirteen.
How is it so?
Because of the intense activity of multiplying life.
It has been said that the who is a good preserver of hi life
Meets no tigers or wild buffaloes on land,
Is not vulnerable to weapons in the field of battle.
The horns of the wild buffalo are powerless against him.
How is it so?
Because he is beyond death.