योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-213, verse-20

कचनाकचनं सर्गक्षयात्मास्य निजं वपुः ।
व्योमात्म शुक्लकृष्णं स्याद्यथावयविनो वपुः ॥ २० ॥

kacanākacanaṃ sargakṣayātmāsya nijaṃ vapuḥ ,
vyomātma śuklakṛṣṇaṃ syādyathāvayavino vapuḥ 20

20. kacanākacanam sargakṣayātmā asya nijam vapuḥ
vyomātma śuklakṛṣṇam syāt yathā avayavinaḥ vapuḥ

20. asya nijam vapuḥ kacanākacanam sargakṣayātmā
vyomātma śuklakṛṣṇam syāt yathā avayavinaḥ vapuḥ

20. This entity's own nature (vapus) is the alternation of manifestation (kacana) and non-manifestation (akacana), whose very essence is creation and dissolution. Its nature, being space-like (vyomātma), is both 'white' and 'black', just as is the form of any composite entity.

Words meanings summery:

• कचनाकचनम् (kacanākacanam) - the alternation of manifestation and non-manifestation (shining and non-shining, manifestation and non-manifestation)

• सर्गक्षयात्मा (sargakṣayātmā) - whose very essence is creation and dissolution (whose nature is creation and dissolution)

• अस्य (asya) - This entity's (of this, its)

• निजम् (nijam) - own (own, inherent, proper)

• वपुः (vapuḥ) - nature (vapus) (body, form, nature, essence)

• व्योमात्म (vyomātma) - spatial (vyomātma) nature (whose nature is space, space-like)

• शुक्लकृष्णम् (śuklakṛṣṇam) - both 'white' and 'black' (white and black (light and darkness))

• स्यात् (syāt) - is (may be, let it be, is)

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

• अवयविनः (avayavinaḥ) - of any composite entity (of a whole, of that which has parts)

• वपुः (vapuḥ) - form (body, form, nature, essence)

Words meanings and morphology

कचनाकचनम् (kacanākacanam) - the alternation of manifestation and non-manifestation (shining and non-shining, manifestation and non-manifestation)

(noun)

Nominative, neuter, singular of kacanākacana

kacanākacana - shining and non-shining, manifestation and non-manifestation

Compound type : dvandva (kacana+akacana)

• kacana – shining, glittering, manifestation
  noun (neuter)
  Nominalization of √kac 'to shine'
  Root: kac (class 1)
• akacana – non-shining, non-manifestation
  noun (neuter)
  Negated nominalization of √kac
  Prefix: a
  Root: kac (class 1)

सर्गक्षयात्मा (sargakṣayātmā) - whose very essence is creation and dissolution (whose nature is creation and dissolution)

(adjective)

Nominative, masculine, singular of sargakṣayātman

sargakṣayātman - whose nature is creation and dissolution

Compound type : bahuvrihi (sarga+kṣaya+ātman)

• sarga – creation, emission
  noun (masculine)
  From √sṛj 'to create, emit'
  Root: sṛj (class 6)
• kṣaya – destruction, dissolution, decay
  noun (masculine)
  From √kṣi 'to destroy, waste'
  Root: kṣi (class 5)
• ātman – self, soul, essence, (ātman)
  noun (masculine)
  Root: an (class 2)

अस्य (asya) - This entity's (of this, its)

(pronoun)

Genitive, neuter, singular of idam

idam - this, here, now

Note: Refers to the previously mentioned `cidākāśa`.

निजम् (nijam) - own (own, inherent, proper)

(adjective)

Nominative, neuter, singular of nija

nija - own, inherent, proper, native

Root: nij (class 3)

वपुः (vapuḥ) - nature (vapus) (body, form, nature, essence)

(noun)

Nominative, neuter, singular of vapus

vapus - body, form, nature, essence

Root: vap (class 1)

व्योमात्म (vyomātma) - spatial (vyomātma) nature (whose nature is space, space-like)

(adjective)

Nominative, neuter, singular of vyomātman

vyomātman - whose nature is space, space-like

Compound type : bahuvrihi (vyoman+ātman)

• vyoman – sky, atmosphere, ether, space
  noun (neuter)
  Root: vyā
• ātman – self, soul, essence, (ātman)
  noun (masculine)
  Root: an (class 2)

शुक्लकृष्णम् (śuklakṛṣṇam) - both 'white' and 'black' (white and black (light and darkness))

(adjective)

Nominative, neuter, singular of śuklakṛṣṇa

śuklakṛṣṇa - white and black, light and dark

Compound type : dvandva (śukla+kṛṣṇa)

• śukla – white, bright, pure
  adjective
  Root: śuc (class 1)
• kṛṣṇa – black, dark, dark-blue
  adjective
  Root: kṛṣ (class 1)

स्यात् (syāt) - is (may be, let it be, is)

(verb)

3rd person , singular, active, optative (liṅ) of as

Optative Active

Optative 3rd person singular of √as, 'to be'

Root: as (class 2)

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

(indeclinable)

Comparative adverb.

अवयविनः (avayavinaḥ) - of any composite entity (of a whole, of that which has parts)

(noun)

Genitive, masculine, singular of avayavin

avayavin - having parts, a whole (in relation to its parts)

Derived from avayava 'part' + -in (possessive suffix)

Prefix: ava

Root: yu (class 2)

वपुः (vapuḥ) - form (body, form, nature, essence)

(noun)

Nominative, neuter, singular of vapus

vapus - body, form, nature, essence

Root: vap (class 1)