योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-37, verse-18

शून्यत्वे नभसः सौम्य सर्गादित्वे चिदात्मनः ।
कार्यकारणभावादि ब्रह्मैव सकलं यदा ॥ १८ ॥

śūnyatve nabhasaḥ saumya sargāditve cidātmanaḥ ,
kāryakāraṇabhāvādi brahmaiva sakalaṃ yadā 18

18. śūnyatve nabhasaḥ saumya sargāditve cidātmanaḥ
kāryakāraṇabhāvādi brahma eva sakalaṃ yadā

18. O gentle one (saumya), when everything—including the voidness of space (nabhas), the status of the conscious self (cidātman) as the origin of creation, and all principles of cause and effect—is truly Brahman (brahman) alone,...

Words meanings summery:

• शून्यत्वे (śūnyatve) - in the state of void; in emptiness

• नभसः (nabhasaḥ) - of the sky; of space; of the atmosphere

• सौम्य (saumya) - O gentle one; O tranquil one

• सर्गादित्वे (sargāditve) - in the state of being the origin of creation; in the primordial creative state

• चिदात्मनः (cidātmanaḥ) - of the conscious self; of the pure consciousness (ātman)

• कार्यकारणभावादि (kāryakāraṇabhāvādi) - cause and effect relationships and so on; beginning with the state of cause and effect

• ब्रह्म (brahma) - Brahman; the Absolute Reality (brahman)

• एव (eva) - only; indeed; just

• सकलं (sakalaṁ) - all; whole; complete; entire

• यदा (yadā) - when

Words meanings and morphology

शून्यत्वे (śūnyatve) - in the state of void; in emptiness

(noun)

Locative, neuter, singular of śūnyatva

śūnyatva - voidness, emptiness, nullity

Abstract noun formed from 'śūnya' with the suffix '-tva'

नभसः (nabhasaḥ) - of the sky; of space; of the atmosphere

(noun)

Genitive, neuter, singular of nabhas

nabhas - sky, atmosphere, space, heaven

सौम्य (saumya) - O gentle one; O tranquil one

(adjective)

Vocative, masculine, singular of saumya

saumya - gentle, mild, tranquil, auspicious, relating to Soma or the Moon

सर्गादित्वे (sargāditve) - in the state of being the origin of creation; in the primordial creative state

(noun)

Locative, neuter, singular of sargāditva

sargāditva - the state of being the origin or beginning of creation

Abstract noun formed from 'sargādi' with the suffix '-tva'

चिदात्मनः (cidātmanaḥ) - of the conscious self; of the pure consciousness (ātman)

(noun)

Genitive, masculine, singular of cidātman

cidātman - the conscious self, the individual soul (ātman) as pure consciousness (cit)

Compound type : Tatpuruṣa (cit+ātman)

• cit – consciousness, pure thought, understanding (cit)
  noun (feminine)
• ātman – self, soul, spirit, essence (ātman)
  noun (masculine)

कार्यकारणभावादि (kāryakāraṇabhāvādi) - cause and effect relationships and so on; beginning with the state of cause and effect

(noun)

Nominative, neuter, singular of kāryakāraṇabhāvādi

kāryakāraṇabhāvādi - the state of being cause and effect and so forth; beginning with the nature of causality

Compound type : Tatpuruṣa (kāryakāraṇabhāva+ādi)

• kāryakāraṇabhāva – the state or nature of being cause and effect; causality
  noun (masculine)
  Compound of 'kāryakāraṇa' and 'bhāva'
• ādi – beginning, first, and so on; et cetera
  indeclinable

ब्रह्म (brahma) - Brahman; the Absolute Reality (brahman)

(noun)

Nominative, neuter, singular of brahman

brahman - the Absolute, the Supreme Reality, the universal self (brahman)

एव (eva) - only; indeed; just

(indeclinable)

सकलं (sakalaṁ) - all; whole; complete; entire

(adjective)

Nominative, neuter, singular of sakala

sakala - all, whole, complete, having parts

Compound type : Bahuvrīhi (sa+kala)

• sa – with, together with
  indeclinable
  Prefix/indeclinable indicating accompaniment
• kala – a part, a portion, a digit (of the moon)
  noun (masculine)

यदा (yadā) - when

(indeclinable)