योगवासिष्ठः yogavāsiṣṭhaḥ - book-2, chapter-18, verse-5

यथोषसि प्रवृत्तायामालोकोऽवश्यमेष्यति ।
अस्यां वा चित्तमात्रायां सुविवेकस्तथैष्यति ॥ ५ ॥

yathoṣasi pravṛttāyāmāloko'vaśyameṣyati ,
asyāṃ vā cittamātrāyāṃ suvivekastathaiṣyati 5

5. yathā uṣasi pravṛttāyām ālokaḥ avaśyam eṣyati
asyām vā citta-mātrāyām su-vivekaḥ tathā eṣyati

5. yathā uṣasi pravṛttāyām (satyām) ālokaḥ avaśyam eṣyati,
vā asyām citta-mātrāyām tathā su-vivekaḥ eṣyati.

5. Just as light (āloka) will certainly appear when dawn (uṣasi) has arrived, similarly, excellent discernment (viveka) will arise in this state of mind-only (cittamātrā).

Words meanings summery:

• यथा (yathā) - just as, as

• उषसि (uṣasi) - at dawn, in the morning twilight

• प्रवृत्तायाम् (pravṛttāyām) - having commenced, having arrived, having arisen

• आलोकः (ālokaḥ) - light, radiance, sight, perception

• अवश्यम् (avaśyam) - necessarily, certainly, inevitably

• एष्यति (eṣyati) - will come, will arrive, will go

• अस्याम् (asyām) - in this

• वा (vā) - or, and

• चित्त-मात्रायाम् (citta-mātrāyām) - in the state of mind-only, in pure consciousness

• सु-विवेकः (su-vivekaḥ) - excellent discernment, good discrimination

• तथा (tathā) - similarly, in that way, so

• एष्यति (eṣyati) - will come, will arrive, will go

Words meanings and morphology

यथा (yathā) - just as, as

(indeclinable)

उषसि (uṣasi) - at dawn, in the morning twilight

(noun)

Locative, feminine, singular of uṣas

uṣas - dawn, morning twilight

प्रवृत्तायाम् (pravṛttāyām) - having commenced, having arrived, having arisen

(adjective)

Locative, feminine, singular of pravṛtta

pravṛtta - commenced, arisen, active, engaged in

Past Passive Participle

Formed from prefix pra + root vṛt + suffix kta

Prefix: pra

Root: vṛt (class 1)

Note: Locative absolute participle.

आलोकः (ālokaḥ) - light, radiance, sight, perception

(noun)

Nominative, masculine, singular of āloka

āloka - light, sight, vision, appearance

From prefix ā + root lok (to see)

Prefix: ā

Root: lok (class 10)

अवश्यम् (avaśyam) - necessarily, certainly, inevitably

(indeclinable)

Adverbial form of avaśya (necessary)

एष्यति (eṣyati) - will come, will arrive, will go

(verb)

3rd person , singular, active, future (lṛṭ) of i

Root: i (class 2)

अस्याम् (asyām) - in this

(pronoun)

Locative, feminine, singular of idam

idam - this, this here

वा (vā) - or, and

(indeclinable)

चित्त-मात्रायाम् (citta-mātrāyām) - in the state of mind-only, in pure consciousness

(noun)

Locative, feminine, singular of citta-mātrā

citta-mātrā - mind-only, mere thought, pure consciousness (cittamātrā)

Compound type : karmadhāraya (citta+mātrā)

• citta – mind, consciousness, thought
  noun (neuter)
  Root: cit (class 1)
• mātrā – only, mere, measure, quantity
  noun (feminine)
  Root: mā (class 2)

सु-विवेकः (su-vivekaḥ) - excellent discernment, good discrimination

(noun)

Nominative, masculine, singular of su-viveka

su-viveka - excellent discernment, proper discrimination (viveka)

Compound type : prādi tatpuruṣa (su+viveka)

• su – good, well, excellent
  indeclinable
• viveka – discrimination, discernment, judgment
  noun (masculine)
  From prefix vi + root vic (to distinguish)
  Prefix: vi
  Root: vic (class 10)

तथा (tathā) - similarly, in that way, so

(indeclinable)

एष्यति (eṣyati) - will come, will arrive, will go

(verb)

3rd person , singular, active, future (lṛṭ) of i

Root: i (class 2)