Proper noun
Katha Upanishad
One of the primary Upanishads, embedded in the last eight short sections of the Kaṭha school of the Krishna Yajurveda.
For the date of this Upanishad see also Helmuth von Glasenapp, from the 1950 Proceedings of the "Akademie der Wissenschaften und Literatur" citation Katha Upanishad integrates the monism of early Upanishads with concepts of samkhya and yoga. Source: Internet
The Katha Upanishad and Bhagavad Gita present narratives where the student criticizes the teacher's inferior answers. Source: Internet
The Katha Upanishad describes yoga, including meditation. Source: Internet