योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-55, verse-3

नूनं चेत्यांशरहिता चिद्यदात्मनि लीयते ।
असद्रूपवदत्यच्छा सत्तासामान्यता तदा ॥ ३ ॥

nūnaṃ cetyāṃśarahitā cidyadātmani līyate ,
asadrūpavadatyacchā sattāsāmānyatā tadā 3

3. nūnam cetyāṃśarahitā cit yadā ātmani līyate
asadrūpavadatyacchā sattāsāmānyatā tadā

3. nūnam yadā cetyāṃśarahitā cit ātmani līyate tadā
asadrūpavadatyacchā sattāsāmānyatā (bhavati)

3. Certainly, when consciousness (cit), devoid of any object of thought, merges into the self (ātman), then that general existence becomes exceedingly pure, like a form of non-being (asad-rūpa).

Words meanings summery:

• नूनम् (nūnam) - Emphatic particle. (certainly, indeed, surely)

• चेत्यांशरहिता (cetyāṁśarahitā) - Describes 'cit'. (devoid of the object of thought, free from cognizable aspects)

• चित् (cit) - The ultimate, unconditioned consciousness (cit). (consciousness, pure intelligence)

• यदा (yadā) - Introduces a temporal clause. (when, at which time)

• आत्मनि (ātmani) - Refers to the supreme self (ātman). (in the self, in the soul)

• लीयते (līyate) - it merges, it dissolves, it disappears

• असद्रूपवदत्यच्छा (asadrūpavadatyacchā) - Describes the nature of 'sattāsāmānyatā'. (exceedingly pure, like a form of non-being / formless state)

• सत्तासामान्यता (sattāsāmānyatā) - The state described. (general existence, universal being)

• तदा (tadā) - Corresponds with 'yadā'. (then, at that time)

Words meanings and morphology

नूनम् (nūnam) - Emphatic particle. (certainly, indeed, surely)

(indeclinable)

चेत्यांशरहिता (cetyāṁśarahitā) - Describes 'cit'. (devoid of the object of thought, free from cognizable aspects)

(adjective)

Nominative, feminine, singular of cetyāṃśarahita

cetyāṁśarahita - devoid of the cognizable part, without objects of thought

Compound type : Tatpurusha (cetya+aṃśa+rahita)

• cetya – cognizable, perceptible, an object of thought
  adjective
  Gerundive from cit.
  Root: cit (class 1)
• aṃśa – part, portion, aspect
  noun (masculine)
• rahita – devoid of, free from, abandoned
  adjective
  Past Passive Participle
  Root: rah (class 1)

Note: Refers to 'cit'.

चित् (cit) - The ultimate, unconditioned consciousness (cit). (consciousness, pure intelligence)

(noun)

Nominative, feminine, singular of cit

cit - consciousness, pure intelligence, understanding

Root: cit (class 1)

Note: Subject of the verb 'līyate'.

यदा (yadā) - Introduces a temporal clause. (when, at which time)

(indeclinable)

आत्मनि (ātmani) - Refers to the supreme self (ātman). (in the self, in the soul)

(noun)

Locative, masculine, singular of ātman

ātman - self, soul, spirit, the ultimate reality (ātman)

Note: Place where consciousness merges.

लीयते (līyate) - it merges, it dissolves, it disappears

(verb)

3rd person , singular, middle, present (Laṭ) of lī

Present tense, Ātmanepada (middle voice).

Root: lī (class 4)

Note: Verb for 'cit'.

असद्रूपवदत्यच्छा (asadrūpavadatyacchā) - Describes the nature of 'sattāsāmānyatā'. (exceedingly pure, like a form of non-being / formless state)

(adjective)

Nominative, feminine, singular of asadrūpavadatyaccha

asadrūpavadatyaccha - exceedingly pure, like a form of non-being

Compound type : Bahuvrīhi (asat+rūpa+vat+ati+accha)

• asat – non-existent, unreal, not being
  adjective (neuter)
  Prefix: a
  Root: as (class 2)
• rūpa – form, shape, nature, beauty
  noun (neuter)
• vat – like, as, similar to
  suffix
  Suffix for comparison.
• ati – very, exceedingly, beyond
  indeclinable
• accha – clear, pure, pellucid
  adjective

Note: Refers to 'sattāsāmānyatā'.

सत्तासामान्यता (sattāsāmānyatā) - The state described. (general existence, universal being)

(noun)

Nominative, feminine, singular of sattāsāmānyatā

sattāsāmānyatā - general existence, universality of being, common state of existence

Compound type : Tatpurusha (sattā+sāmānya+tā)

• sattā – existence, being, reality
  noun (feminine)
  Root: as (class 2)
• sāmānya – general, universal, common
  adjective (neuter)
• tā – -ness, -ity (suffix forming abstract nouns)
  suffix (feminine)

Note: Subject of the implied verb 'bhavati' (is/becomes).

तदा (tadā) - Corresponds with 'yadā'. (then, at that time)

(indeclinable)