योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-208, verse-23

कचनाकचने यस्य स्वभावो निर्मलोऽक्षयः ।
यथैतावात्मनो नान्यौ स्पन्दास्पन्दौ नभस्वतः ॥ २३ ॥

kacanākacane yasya svabhāvo nirmalo'kṣayaḥ ,
yathaitāvātmano nānyau spandāspandau nabhasvataḥ 23

23. kacana akacane yasya svabhāvaḥ nirmalaḥ akṣayaḥ yathā
etau ātmanaḥ na anyau spanda aspandau nabhasvataḥ

23. yasya svabhāvaḥ kacana akacane nirmalaḥ akṣayaḥ,
yathā nabhasvataḥ etau spanda aspandau ātmanaḥ na anyau

23. Whose intrinsic nature (svabhāva) is pure and imperishable, whether in manifestation or non-manifestation, just as the movement and non-movement of the wind are not separate from the wind itself.

Words meanings summery:

• कचन (kacana) - shining, appearing, manifesting

• अकचने (akacane) - in non-shining, in non-appearance, in non-manifestation

• यस्य (yasya) - whose, of whom, of which

• स्वभावः (svabhāvaḥ) - own nature, intrinsic nature

• निर्मलः (nirmalaḥ) - pure, spotless, clean

• अक्षयः (akṣayaḥ) - imperishable, undecaying, everlasting

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

• एतौ (etau) - these two

• आत्मनः (ātmanaḥ) - in this context, 'from the wind itself' (referring back to "nabhasvataḥ") (of the self, of the soul, of oneself)

• न (na) - not, no

• अन्यौ (anyau) - other (two), different (two)

• स्पन्द (spanda) - vibration, motion, throbbing

• अस्पन्दौ (aspandau) - non-movement, non-vibration

• नभस्वतः (nabhasvataḥ) - of the wind, of the air

Words meanings and morphology

कचन (kacana) - shining, appearing, manifesting

(noun)

Locative, neuter, singular of kacana

kacana - shining, appearing, manifesting

Verbal noun

From root 'kac' (to shine, appear)

Root: kac (class 1)

Note: Part of a dvandva compound "kacana-akacane" in locative dual.

अकचने (akacane) - in non-shining, in non-appearance, in non-manifestation

(noun)

Locative, neuter, dual of akacana

akacana - non-shining, non-appearance, non-manifestation

Negative compound with 'a-' prefix

Compound type : nañ-tatpurusha (a+kacana)

• a – not, non-
  indeclinable
  Negative particle
• kacana – shining, appearing, manifesting
  noun (neuter)
  Verbal noun
  From root 'kac' (to shine, appear)
  Root: kac (class 1)

Note: The full compound 'kacanākacane' is a dvandva compound (kacana-akacane) in dual locative, meaning 'in (both) appearance and non-appearance'.

यस्य (yasya) - whose, of whom, of which

(pronoun)

Genitive, masculine, singular of yad

yad - which, who

Relative pronoun

Note: Refers to Brahman or the ultimate reality implicitly.

स्वभावः (svabhāvaḥ) - own nature, intrinsic nature

(noun)

Nominative, masculine, singular of svabhāva

svabhāva - own nature, inherent disposition, intrinsic nature

Compound type : tatpurusha (sva+bhāva)

• sva – own
  pronoun (masculine)
• bhāva – being, state, nature, existence
  noun (masculine)
  From root 'bhū' (to be)
  Root: bhū (class 1)

निर्मलः (nirmalaḥ) - pure, spotless, clean

(adjective)

Nominative, masculine, singular of nirmala

nirmala - pure, spotless, clean, without blemish

Compound 'nis' (without) + 'mala' (dirt)

Compound type : avyayibhāva (nis+mala)

• nis – out, without, free from
  indeclinable
  Prefix/preposition
• mala – dirt, impurity, blemish
  noun (neuter)

Note: Agrees with "svabhāvaḥ".

अक्षयः (akṣayaḥ) - imperishable, undecaying, everlasting

(adjective)

Nominative, masculine, singular of akṣaya

akṣaya - imperishable, undecaying, everlasting

Negative compound 'a-' (not) + 'kṣaya' (decay)

Compound type : nañ-tatpurusha (a+kṣaya)

• a – not, non-
  indeclinable
  Negative particle
• kṣaya – decay, destruction, loss
  noun (masculine)
  From root 'kṣi' (to decay, destroy)
  Root: kṣi (class 1)

Note: Agrees with "svabhāvaḥ".

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

(indeclinable)

एतौ (etau) - these two

(pronoun)

Nominative, masculine, dual of etad

etad - this, these

Demonstrative pronoun

Note: Refers to 'spanda' and 'aspanda'.

आत्मनः (ātmanaḥ) - in this context, 'from the wind itself' (referring back to "nabhasvataḥ") (of the self, of the soul, of oneself)

(noun)

Genitive, masculine, singular of ātman

ātman - self, soul, spirit, essential nature

Note: Here implies "from its own being" or "of its own essence" when referring to 'nabhasvataḥ'.

न (na) - not, no

(indeclinable)

अन्यौ (anyau) - other (two), different (two)

(pronoun)

Nominative, masculine, dual of anya

anya - other, different

Note: Agrees with 'spanda-aspandau'.

स्पन्द (spanda) - vibration, motion, throbbing

(noun)

Nominative, masculine, singular of spanda

spanda - vibration, movement, throb, pulsation

Verbal noun

From root 'spand' (to tremble, vibrate)

Root: spand (class 1)

Note: Part of a dvandva compound "spanda-aspandau".

अस्पन्दौ (aspandau) - non-movement, non-vibration

(noun)

Nominative, masculine, dual of aspanda

aspanda - non-vibration, non-movement, stillness

Negative compound with 'a-' prefix

Compound type : nañ-tatpurusha (a+spanda)

• a – not, non-
  indeclinable
  Negative particle
• spanda – vibration, movement, throb, pulsation
  noun (masculine)
  Verbal noun
  From root 'spand' (to tremble, vibrate)
  Root: spand (class 1)

Note: The full compound 'spandāspandau' is a dvandva compound (spanda-aspandau) in dual nominative, meaning 'movement and non-movement'.

नभस्वतः (nabhasvataḥ) - of the wind, of the air

(noun)

Genitive, masculine, singular of nabhasvat

nabhasvat - wind, air, having a cloud, cloudy

From 'nabhas' (sky, cloud) + '-vat' (having)

Note: 'Nabhasvat' can refer to wind or air.