योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-97, verse-13

द्वित्वैक्याद्यात्मकं व्योमपुष्पवत्स्वानुभूतितः ।
वस्तु नाशैकनिष्ठत्वान्न वा ज्ञमुपपद्यते ॥ १३ ॥

dvitvaikyādyātmakaṃ vyomapuṣpavatsvānubhūtitaḥ ,
vastu nāśaikaniṣṭhatvānna vā jñamupapadyate 13

13. dvitvaikādyātmakaṃ vyomapuṣpavat svānubhūtitaḥ
vastu nāśaikaniṣṭhatvāt na vā jñam upapadyate

13. vastu dvitvaikādyātmakaṃ svānubhūtitaḥ vyomapuṣpavat
nāśaikaniṣṭhatvāt jñam na vā upapadyate

13. That which is characterized by duality, unity, and similar distinctions—such an object (vastu)—is, from the perspective of direct experience (svānubhūti), like a sky-flower (i.e., non-existent). Since its sole nature is to be subject to destruction, it cannot truly be an object of knowledge.

Words meanings summery:

• द्वित्वैकाद्यात्मकं (dvitvaikādyātmakaṁ) - having the nature of duality, unity, and so forth

• व्योमपुष्पवत् (vyomapuṣpavat) - like a sky-flower (an illusion, a non-existent thing)

• स्वानुभूतितः (svānubhūtitaḥ) - from one's own experience, by direct realization

• वस्तु (vastu) - an object, a thing, reality

• नाशैकनिष्ठत्वात् (nāśaikaniṣṭhatvāt) - due to being solely destined for destruction, because its sole nature is destruction

• न (na) - not

• वा (vā) - or (used here for emphasis, like "not at all")

• ज्ञम् (jñam) - knowable, known

• उपपद्यते (upapadyate) - is established, makes sense, is suitable

Words meanings and morphology

द्वित्वैकाद्यात्मकं (dvitvaikādyātmakaṁ) - having the nature of duality, unity, and so forth

(adjective)

neuter, singular of dvitvaikādyātmaka

dvitvaikādyātmaka - having the nature of duality, unity, and beginning with them

Compound type : bahuvrīhi (dvitva+aikya+ādi+ātmaka)

• dvitva – duality, twoness
  noun (neuter)
• aikya – unity, oneness
  noun (neuter)
• ādi – beginning, and so forth, etc.
  noun (masculine)
• ātmaka – having the nature of, consisting of
  adjective (neuter)

व्योमपुष्पवत् (vyomapuṣpavat) - like a sky-flower (an illusion, a non-existent thing)

(indeclinable)

Suffix -vat indicates 'like' or 'having'

Compound type : tatpuruṣa (vyoman+puṣpa)

• vyoman – sky, atmosphere, space
  noun (neuter)
• puṣpa – flower
  noun (neuter)

Note: Used adverbially to mean 'like a sky-flower'

स्वानुभूतितः (svānubhūtitaḥ) - from one's own experience, by direct realization

(noun)

Ablative, feminine, singular of svānubhūti

svānubhūti - self-experience, direct perception

Compound type : tatpuruṣa (sva+anubhūti)

• sva – own, self
  pronoun (masculine)
• anubhūti – experience, perception, realization
  noun (feminine)
  Prefix: anu
  Root: bhū (class 1)

Note: Suffix -taḥ indicates ablative case

वस्तु (vastu) - an object, a thing, reality

(noun)

neuter, singular of vastu

vastu - object, thing, substance, reality

नाशैकनिष्ठत्वात् (nāśaikaniṣṭhatvāt) - due to being solely destined for destruction, because its sole nature is destruction

(noun)

Ablative, neuter, singular of nāśaikaniṣṭhatva

nāśaikaniṣṭhatva - the state of being solely dedicated to or ending in destruction

Compound type : tatpuruṣa (nāśa+eka+niṣṭha+tva)

• nāśa – destruction, ruin, disappearance
  noun (masculine)
  Root: naś (class 4)
• eka – one, single, sole
  numeral/adjective
• niṣṭha – abiding in, devoted to, ending in
  adjective (neuter)
  Past Passive Participle
  Derived from root sthā with prefix ni
  Prefix: ni
  Root: sthā (class 1)
• tva – suffix for abstract noun, 'ness', 'hood'
  suffix (neuter)

न (na) - not

(indeclinable)

वा (vā) - or (used here for emphasis, like "not at all")

(indeclinable)

ज्ञम् (jñam) - knowable, known

(adjective)

neuter, singular of jña

jña - knowing, understanding, wise, knowable

Derived from root jñā

Root: jñā (class 9)

उपपद्यते (upapadyate) - is established, makes sense, is suitable

(verb)

3rd person , singular, middle, present (laṭ) of upapad

Prefix: upa

Root: pad (class 4)