योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-10, verse-35

नच संलक्ष्यते दीपे तमसो रूपनिश्चयः ।
उदेति केवलं ध्वान्तध्वंसो विमलमूर्तिमान् ॥ ३५ ॥

naca saṃlakṣyate dīpe tamaso rūpaniścayaḥ ,
udeti kevalaṃ dhvāntadhvaṃso vimalamūrtimān 35

35. na ca saṃlakṣyate dīpe tamasaḥ rūpaniścayaḥ |
udeti kevalam dhvāntadhvaṃsaḥ vimalamūrtimān ||

35. ca dīpe tamasaḥ rūpaniścayaḥ na saṃlakṣyate
kevalam vimalamūrtimān dhvāntadhvaṃsaḥ udeti

35. Nor is the definite form of darkness perceived in the light of the lamp. Only the destruction of darkness, appearing in a pure form, becomes manifest.

Words meanings summery:

• न (na) - not, no

• च (ca) - and, also

• संलक्ष्यते (saṁlakṣyate) - is perceived, is seen, is observed

• दीपे (dīpe) - in the lamp, in the light

• तमसः (tamasaḥ) - of darkness, of gloom

• रूपनिश्चयः (rūpaniścayaḥ) - definite form, ascertained nature

• उदेति (udeti) - rises, appears, comes forth

• केवलम् (kevalam) - only, merely, solely

• ध्वान्तध्वंसः (dhvāntadhvaṁsaḥ) - destruction of darkness

• विमलमूर्तिमान् (vimalamūrtimān) - having a pure form, embodied as purity

Words meanings and morphology

न (na) - not, no

(indeclinable)

च (ca) - and, also

(indeclinable)

संलक्ष्यते (saṁlakṣyate) - is perceived, is seen, is observed

(verb)

3rd person , singular, passive, present (laṭ) of lakṣ

verb form of 'lakṣ' (to perceive) with prefix 'sam'; used in passive voice

Prefix: sam

Root: lakṣ (class 10)

Note: The passive voice is indicated by the 'ya' suffix and ātmanepada ending.

दीपे (dīpe) - in the lamp, in the light

(noun)

Locative, masculine, singular of dīpa

dīpa - lamp, light

Root: dīp (class 4)

तमसः (tamasaḥ) - of darkness, of gloom

(noun)

Genitive, neuter, singular of tamas

tamas - darkness, gloom, ignorance, one of the three guṇas

Root: tam

रूपनिश्चयः (rūpaniścayaḥ) - definite form, ascertained nature

(noun)

Nominative, masculine, singular of rūpaniścaya

rūpaniścaya - definite ascertainment of form, true nature

Compound type : tatpuruṣa (rūpa+niścaya)

• rūpa – form, shape, nature
  noun (neuter)
• niścaya – certainty, determination, ascertainment
  noun (masculine)
  derived from root `ci` (to gather) with `nis` (out)
  Prefix: nis
  Root: ci (class 5)

उदेति (udeti) - rises, appears, comes forth

(verb)

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

verb form of 'i' (to go) with prefix 'ud' (up, forth)

Prefix: ud

Root: i (class 2)

केवलम् (kevalam) - only, merely, solely

(indeclinable)

Note: Adverbial usage of neuter accusative singular.

ध्वान्तध्वंसः (dhvāntadhvaṁsaḥ) - destruction of darkness

(noun)

Nominative, masculine, singular of dhvāntadhvaṃsa

dhvāntadhvaṁsa - destruction of darkness

Compound type : tatpuruṣa (dhvānta+dhvaṃsa)

• dhvānta – darkness, gloom
  noun (neuter)
  Past Passive Participle
  Past passive participle from root `dhvan`
  Root: dhvan (class 1)
• dhvaṃsa – destruction, annihilation, ruin
  noun (masculine)
  from root `dhvaṃs` (to fall, destroy)
  Root: dhvaṃs (class 1)

विमलमूर्तिमान् (vimalamūrtimān) - having a pure form, embodied as purity

(adjective)

Nominative, masculine, singular of vimalamūrtimat

vimalamūrtimat - having a spotless form, of pure essence

Taddhita suffix `matup` applied to `vimalamūrti`

Compound type : tatpuruṣa (vimala+mūrti+mat)

• vimala – spotless, pure, clean
  adjective (masculine)
  from 'mala' (dirt) with 'vi' (without)
  Prefix: vi
• mūrti – form, shape, embodiment, idol
  noun (feminine)
  from root `mūrch` (to become solid)
  Root: mūrch (class 1)
• mat – possessing, having
  suffix
  Taddhita suffix
  Forms adjectives indicating possession.

Note: Adjective agreeing with `dhvāntadhvaṃsaḥ`.