योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-90, verse-16

मनस्तां मूढतां विद्धि यदा नश्यति सानघ ।
चित्तनाशाभिधानं हि तदा सत्त्वमुदेत्यलम् ॥ १६ ॥

manastāṃ mūḍhatāṃ viddhi yadā naśyati sānagha ,
cittanāśābhidhānaṃ hi tadā sattvamudetyalam 16

16. manastām mūḍhatām viddhi yadā naśyati sā anagha
cittanāśābhidhānam hi tadā sattvam udeti alam

16. anagha manastām mūḍhatām viddhi yadā sā naśyati
tadā hi cittanāśābhidhānam sattvam alam udeti

16. O sinless one (anagha), know the state of mind to be delusion. When that [delusion] perishes, then indeed pure being fully arises, which is termed the destruction of the mind.

Words meanings summery:

• मनस्ताम् (manastām) - the state of mind, mentality, mind-ness

• मूढताम् (mūḍhatām) - delusion, foolishness, ignorance, infatuation

• विद्धि (viddhi) - know! perceive! understand!

• यदा (yadā) - when, at which time

• नश्यति (naśyati) - perishes, is lost, disappears, is destroyed

• सा (sā) - referring to 'mūḍhatā' (delusion) or 'manastā mūḍhatā' (that (feminine))

• अनघ (anagha) - A vocative addressing Rāma or another pure soul. (O sinless one! O faultless one!)

• चित्तनाशाभिधानम् (cittanāśābhidhānam) - named the destruction of the mind, called cittanāśa

• हि (hi) - indeed, surely, because

• तदा (tadā) - then, at that time

• सत्त्वम् (sattvam) - pure consciousness or existential reality (pure being, reality, goodness, the quality of goodness/purity, essence)

• उदेति (udeti) - rises, arises, appears

• अलम् (alam) - implies "to its full extent" or "completely" (sufficiently, completely, fully, enough)

Words meanings and morphology

मनस्ताम् (manastām) - the state of mind, mentality, mind-ness

(noun)

Accusative, feminine, singular of manastā

manastā - the state of mind, mentality, mind-ness

derived from 'manas' (mind) + 'tā' (suffix for state/quality)

मूढताम् (mūḍhatām) - delusion, foolishness, ignorance, infatuation

(noun)

Accusative, feminine, singular of mūḍhatā

mūḍhatā - delusion, foolishness, ignorance, infatuation

derived from 'mūḍha' (deluded, foolish) + 'tā' (suffix for state/quality)

विद्धि (viddhi) - know! perceive! understand!

(verb)

2nd person , singular, active, imperative (loṭ) of vid

imperative 2nd person singular

'vid' (root, Class 2, adādi)

Root: vid (class 2)

यदा (yadā) - when, at which time

(indeclinable)

नश्यति (naśyati) - perishes, is lost, disappears, is destroyed

(verb)

3rd person , singular, active, present (laṭ) of naś

present 3rd person singular

'naś' (root, Class 4, divādi)

Root: naś (class 4)

सा (sā) - referring to 'mūḍhatā' (delusion) or 'manastā mūḍhatā' (that (feminine))

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

अनघ (anagha) - A vocative addressing Rāma or another pure soul. (O sinless one! O faultless one!)

(adjective)

Vocative, masculine, singular of anagha

anagha - sinless, faultless, pure

'na' (not) + 'agha' (sin, fault)

Compound type : nañ-tatpuruṣa (na+agha)

• na – not, no
  indeclinable
• agha – sin, fault, evil
  noun (neuter)

चित्तनाशाभिधानम् (cittanāśābhidhānam) - named the destruction of the mind, called cittanāśa

(noun)

Nominative, neuter, singular of cittanāśābhidhāna

cittanāśābhidhāna - named the destruction of the mind, called cittanāśa

compound

Compound type : tatpuruṣa (cittanāśa+abhidhāna)

• cittanāśa – destruction of mind
  noun (masculine)
  compound of 'citta' and 'nāśa'
• abhidhāna – name, appellation, designation, term
  noun (neuter)
  verbal noun
  verbal noun from 'dhā' with 'abhi'
  Prefix: abhi
  Root: dhā (class 3)

Note: Qualifies 'sattvam'.

हि (hi) - indeed, surely, because

(indeclinable)

तदा (tadā) - then, at that time

(indeclinable)

सत्त्वम् (sattvam) - pure consciousness or existential reality (pure being, reality, goodness, the quality of goodness/purity, essence)

(noun)

Nominative, neuter, singular of sattva

sattva - pure being, existence, reality, goodness, the quality of goodness/purity, essence

from 'sat' (being) + 'tva' (suffix)

Root: as (class 2)

उदेति (udeti) - rises, arises, appears

(verb)

3rd person , singular, active, present (laṭ) of ud-i

present 3rd person singular

'i' (root, Class 2, adādi) with prefix 'ud'

Prefix: ud

Root: i (class 2)

अलम् (alam) - implies "to its full extent" or "completely" (sufficiently, completely, fully, enough)

(indeclinable)