@Anshulspiritual
"Satyam Jnanam Anantam Brahma"

This is a famous definition of Brahman from Taittiriya Upanishad 2.1.1. Swami Sarvapriyananda thinks this is the best description that he has come across. His full talk can be found here.
Advaita explanation:
1/n

“Satyam Jnanam Anantam Brahma”

Anantam == na antam (no limit): Unlimited in terms of of Space, Time, Objects

Space limitation: Every object has a space limitation. i.e. if something is here, it is NOT there. Brahman is all pervading, or omnipresent.

2/n

Time limitation: Every object has a beginning in time, and end in time. Brahman is eternal, or outside of time.

3/n

Object limitation: If some gold is a ring, it is not a chain or a bangle. Brahman does not have this limitation. There is no object separate from it. Another way to say this: there is no second object apart from Brahman. Brahman is non-dual.

4/n

Satyam: Real, that which exists.

A table or chair exists, but does not fit the “Anantam” definition. Brahman is something which has to exist without limits. What is common to all objects that exist?

5/n

Instead of thinking of matter as objects, think outside the box - imagine pure Existence itself that just appears as object. Brahman is pure Existence.

6/n

Jnanam: Any kind of knowledge.

The primary meaning of the word Jnanam is knowledge. However, that definition does not fit in the context of the previous two words.

7/n

You can have book knowledge, place knowledge, etc, but they are not “Anantam”. So we consider the secondary meaning of the word - Awareness or Consciousness. This meaning fits in with the context.

So - Brahman is described as Consciousness by this verse.

n/n

Source: r/hinduism