There are 108 Upanisads, principal. Out of that, nine Upanisads are very important. So out of those nine Upanisads, Svetasvatara Upanisad, Taittireya Upanisad, Aitareya, Isopanisad, Mundaka, Mandukya, Kathopanisad, these Upanisads are very important

Expressions researched:
"there are 108 Upaniṣads, principal. Out of that, nine Upaniṣads are very important. So out of those nine Upaniṣads, Śvetāśvatara Upaniṣad, Taittireya Upaniṣad, Aitareya Upaniṣad, Īśopaniṣad, Muṇḍaka Upaniṣad, Māṇḍūkya Upaniṣad, Kaṭhopaniṣad, these Upaniṣads are very important"

Lectures

Bhagavad-gita As It Is Lectures

There are many Upaniṣads; they are called Vedas. Upaniṣads are the headlines of the Vedas. Just like in a chapter there is a headline, similarly, these Upaniṣads are the headlines of the Vedas. Kaṭhopani . . . there are 108 Upaniṣads, principal. Out of that, nine Upaniṣads are very important. So out of those nine Upaniṣads, Śvetāśvatara Upaniṣad, Taittireya Upaniṣad, Aitareya Upaniṣad, Īśopaniṣad, Muṇḍaka Upaniṣad, Māṇḍūkya Upaniṣad, Kaṭhopaniṣad, these Upaniṣads are very important.

681127 - Lecture BG 02.08-12 - Los Angeles

Devotee: "Never was there a time when I did not exist, nor you, nor all these kings. Nor in the future shall any of us cease to be." (BG 2.12)

Purport: "In the Vedas, in the Kaṭha Upaniṣad, as well as in the Śvetāśvatara Upaniṣad, it is said that . . ."

Prabhupāda: (correcting pronunciation) Śvetāśvatara.

Devotee: Śvetāśvatara.

Prabhupāda: There are many Upaniṣads; they are called Vedas. Upaniṣads are the headlines of the Vedas. Just like in a chapter there is a headline, similarly, these Upaniṣads are the headlines of the Vedas. Kaṭhopani . . . there are 108 Upaniṣads, principal. Out of that, nine Upaniṣads are very important. So out of those nine Upaniṣads, Śvetāśvatara Upaniṣad, Taittireya Upaniṣad, Aitareya Upaniṣad, Īśopaniṣad, Muṇḍaka Upaniṣad, Māṇḍūkya Upaniṣad, Kaṭhopaniṣad, these Upaniṣads are very important.

And whenever there is argument on some point, one has to give reference from these Upaniṣads. If one can give reference from the Upaniṣads, then his argument is very strong. Śabda-pramāṇa. Pramāṇa means evidence. Evidence . . . if you want to gain in your case . . . just like you have to give very nice evidence in a court, similarly, according to Vedic culture, the evidence is pramāṇa. Pramāṇa means evidence. Śabda-pramāṇa.

There are three kinds of evidences accepted by the learned scholars in Vedic culture. One evidence is pratyakṣa. Pratyakṣa means direct perception. Just like I am seeing you, you are seeing me. I am present, you are present. This is direct perception. And there is another evidence, which is called anumāna.