योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-56, verse-21

क्षणेनैव तथैवेमौ भुविस्थाविति विद्धि हे ।
अद्य क्षीणा मनोराज्ये नानानुभवनात्मनि ॥ २१ ॥

kṣaṇenaiva tathaivemau bhuvisthāviti viddhi he ,
adya kṣīṇā manorājye nānānubhavanātmani 21

21. kṣaṇena eva tathā eva imau bhuvisthau iti viddhi
he adya kṣīṇāḥ manorājye nānānubhavanātmani

21. O, know that these two (creation and destruction), even if they appear to exist on earth, are likewise transient, lasting only for an instant. Now, within the mind's realm, which is characterized by diverse experiences, [these mental constructs] are diminished.

Words meanings summery:

• क्षणेन (kṣaṇena) - in a moment, in an instant

• एव (eva) - indeed, only, just, exactly

• तथा (tathā) - likewise, thus, in the same way

• एव (eva) - indeed, only, just, exactly

• इमौ (imau) - these two (creation and destruction from the previous verse) (these two)

• भुविस्थौ (bhuvisthau) - existing on earth, standing on the ground

• इति (iti) - thus, so, (quotes)

• विद्धि (viddhi) - know!

• हे (he) - O! (vocative particle)

• अद्य (adya) - today, now

• क्षीणाः (kṣīṇāḥ) - diminished, referring to mental constructs or experiences (diminished, wasted, perished, ceased)

• मनोराज्ये (manorājye) - in the mental kingdom, in the realm of the mind

• नानानुभवनात्मनि (nānānubhavanātmani) - characterizing the mental realm as being composed of diverse experiences (in that whose nature is various experiences, in the essence of diverse perceptions)

Words meanings and morphology

क्षणेन (kṣaṇena) - in a moment, in an instant

(noun)

Instrumental, masculine, singular of kṣaṇa

kṣaṇa - moment, instant, a very short period of time

एव (eva) - indeed, only, just, exactly

(indeclinable)

तथा (tathā) - likewise, thus, in the same way

(indeclinable)

एव (eva) - indeed, only, just, exactly

(indeclinable)

इमौ (imau) - these two (creation and destruction from the previous verse) (these two)

(pronoun)

Nominative, masculine, dual of idam

idam - this, these

भुविस्थौ (bhuvisthau) - existing on earth, standing on the ground

(adjective)

Nominative, masculine, dual of bhuvistha

bhuvistha - standing on the earth, located in the world

Compound of 'bhuvi' (locative of 'bhū' - earth) and 'stha' (standing).

Compound type : aluk-tatpuruṣa (bhū+stha)

• bhū – earth, ground, world
  noun (feminine)
• stha – standing, situated, abiding, located
  adjective (masculine/feminine/neuter)
  Agent noun suffix
  From root sthā (to stand)
  Root: sthā (class 1)

इति (iti) - thus, so, (quotes)

(indeclinable)

विद्धि (viddhi) - know!

(verb)

2nd person , singular, active, imperative (lot) of vid

Root: vid (class 2)

हे (he) - O! (vocative particle)

(indeclinable)

अद्य (adya) - today, now

(indeclinable)

क्षीणाः (kṣīṇāḥ) - diminished, referring to mental constructs or experiences (diminished, wasted, perished, ceased)

(participle)

Nominative, feminine, plural of kṣīṇa

kṣīṇa - diminished, wasted, perished, destroyed, ceased

Past Passive Participle

from root kṣi (to perish, diminish, destroy)

Root: kṣi (class 1)

Note: Implied subject, e.g., 'mental constructs' or 'experiences' (feminine plural).

मनोराज्ये (manorājye) - in the mental kingdom, in the realm of the mind

(noun)

Locative, neuter, singular of manorājya

manorājya - mental kingdom, realm of the mind, mind's dominion

Compound of 'manas' (mind) and 'rājya' (kingdom).

Compound type : ṣaṣṭhī tatpuruṣa (manas+rājya)

• manas – mind, intellect, thought
  noun (neuter)
• rājya – kingdom, realm, dominion
  noun (neuter)

नानानुभवनात्मनि (nānānubhavanātmani) - characterizing the mental realm as being composed of diverse experiences (in that whose nature is various experiences, in the essence of diverse perceptions)

(noun)

Locative, masculine, singular of nānānubhavanātman

nānānubhavanātman - that whose nature (ātman) is various experiences

Compound of 'nānā' (various), 'anubhavana' (experience), and 'ātman' (nature/essence).

Compound type : bahuvrīhi (nānā+anubhavana+ātman)

• nānā – various, diverse, manifold
  indeclinable/adjective
• anubhavana – experience, perception, feeling
  noun (neuter)
  Nominalization
  from root bhū (to be) with prefix anu
  Prefix: anu
  Root: bhū (class 1)
• ātman – self, soul, essence, nature (ātman)
  noun (masculine)

Note: Used here adjectivally to qualify 'manorājye'.