योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-94, verse-56

वेत्ति भूतमयत्वं तन्मिथ्यैव न तु वास्तवम् ।
तथा यथा त्वं संकल्पपुरुषस्य सतोऽसतः ॥ ५६ ॥

vetti bhūtamayatvaṃ tanmithyaiva na tu vāstavam ,
tathā yathā tvaṃ saṃkalpapuruṣasya sato'sataḥ 56

56. vetti bhūtamayatvam tat mithyā eva na tu vāstavam
tathā yathā tvam saṅkalpapuruṣasya sataḥ asataḥ

56. tat bhūtamayatvam mithyā eva na tu vāstavam vetti
yathā tvam saṅkalpapuruṣasya sataḥ asataḥ tathā

56. It knows that its elemental nature is indeed illusory, not real, just as you perceive a person created by imagination (saṅkalpa), whether that person exists or not.

Words meanings summery:

• वेत्ति (vetti) - knows, perceives, understands

• भूतमयत्वम् (bhūtamayatvam) - the state of being composed of elements, materiality, elemental nature

• तत् (tat) - that, it

• मिथ्या (mithyā) - falsely, incorrectly, illusorily, unreal

• एव (eva) - indeed, only, just

• न (na) - not, no

• तु (tu) - but, on the other hand, however

• वास्तवम् (vāstavam) - real, true, substantial

• तथा (tathā) - thus, so, in that manner

• यथा (yathā) - as, just as, in which manner

• त्वम् (tvam) - you

• सङ्कल्पपुरुषस्य (saṅkalpapuruṣasya) - of a person created by imagination (saṅkalpa) (of a person of imagination, of a mind-created person)

• सतः (sataḥ) - of the existing, of the real

• असतः (asataḥ) - of the non-existing, of the unreal

Words meanings and morphology

वेत्ति (vetti) - knows, perceives, understands

(verb)

3rd person , singular, active, present indicative (lat) of vid

Present Active Indicative

3rd person singular, parasmaipada

Root: vid (class 2)

भूतमयत्वम् (bhūtamayatvam) - the state of being composed of elements, materiality, elemental nature

(noun)

Accusative, neuter, singular of bhūtamayatva

bhūtamayatva - the state of being made of elements, materiality

Derived from bhūtamaya (made of elements) + -tva (suffix for abstract noun)

Compound type : tatpuruṣa (bhūta+maya+tva)

• bhūta – element, being, creature, past
  noun (neuter)
  Past Passive Participle
  Root bhū (to be)
  Root: bhū (class 1)
• maya – made of, consisting of, full of
  adjective
  Suffix -maya
• tva – state, condition, nature, -ness, -hood
  noun (neuter)
  Suffix for abstract noun

तत् (tat) - that, it

(pronoun)

Nominative, neuter, singular of tad

tad - that, it, he, she

Note: Could also be accusative neuter singular. Context suggests nominative (subject of 'is illusory').

मिथ्या (mithyā) - falsely, incorrectly, illusorily, unreal

(indeclinable)

एव (eva) - indeed, only, just

(indeclinable)

Note: Emphatic particle.

न (na) - not, no

(indeclinable)

Note: Negative particle.

तु (tu) - but, on the other hand, however

(indeclinable)

Note: Conjunction or particle.

वास्तवम् (vāstavam) - real, true, substantial

(adjective)

Nominative, neuter, singular of vāstava

vāstava - real, true, substantial, existing

Derived from vastu (thing, reality)

Note: Predicate adjective for 'tat bhūtamayatvam'.

तथा (tathā) - thus, so, in that manner

(indeclinable)

Note: Correlative with 'yathā'.

यथा (yathā) - as, just as, in which manner

(indeclinable)

Note: Correlative with 'tathā'.

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you

सङ्कल्पपुरुषस्य (saṅkalpapuruṣasya) - of a person created by imagination (saṅkalpa) (of a person of imagination, of a mind-created person)

(noun)

Genitive, masculine, singular of saṅkalpapuruṣa

saṅkalpapuruṣa - a person created by imagination or will, a thought-person

Compound type : tatpuruṣa (saṅkalpa+puruṣa)

• saṅkalpa – imagination, intention, will, resolve, concept
  noun (masculine)
  From sam-kḷp
  Prefix: sam
  Root: kḷp (class 1)
• puruṣa – person, man, male, spirit, cosmic person
  noun (masculine)

सतः (sataḥ) - of the existing, of the real

(adjective)

Genitive, masculine, singular of sat

sat - existing, real, good, true

Present Active Participle

From as (to be)

Root: as (class 2)

Note: Modifies 'saṅkalpapuruṣasya'.

असतः (asataḥ) - of the non-existing, of the unreal

(adjective)

Genitive, masculine, singular of asat

asat - non-existent, unreal, false, bad

Negative Present Active Participle

Na + as (to be)

Compound type : nañ-tatpuruṣa (na+sat)

• na – not, no
  indeclinable
• sat – existing, real, good
  adjective (masculine)
  Present Active Participle
  From as (to be)
  Root: as (class 2)

Note: Modifies 'saṅkalpapuruṣasya'.