The Rishi Angiras formerly told this true (science); a man who has not performed the (proper) rites, does not read it. Adoration to the highest Rishis! Adoration to the highest Rishis!

In plain words: Long ago the sage Angiras taught this truth. Someone who has not done the proper preparation should not study it. The Upanishad ends by bowing twice to the great sages.