Question: Another question about the Upanishads: why was the King of Death, Yama, not there when Nachiketa arrived?

Sri Chinmoy: So you are carrying us into the lore of the Katha Upanishad! Wonderful. That was not the fault of the King of Death. If I come to your house without making a previous appointment or without your knowledge and do not find you at home. I can't blame you, can I? Nachiketa's father, Vajasravasa, said, "Thee I give to Death." But the King of Death did not say, "O Nachiketa, I am waiting for thee, for thee alone."
Sri Chinmoy, AUM — Vol. 3, No. 7,8, Feb. — 27 Mar. 1968, AUM Publishings -- San Juan, P.R., 1968