योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-85, verse-20

नभोनीलोत्पलस्यान्तर्भ्रमदभ्रमधुव्रतम् ।
प्रस्फुरत्तारकाजालकेसरापूर्णतां गतम् ॥ २० ॥

nabhonīlotpalasyāntarbhramadabhramadhuvratam ,
prasphurattārakājālakesarāpūrṇatāṃ gatam 20

20. nabho-nīlotpalasyāntarbhramadabhramadhuvratam
prasphurat-tārakā-jālakesarāpūrṇatām gatam

20. (tat tamaḥ) nabho-nīlotpalasyāntarbhramadabhramadhuvratam prasphurat-tārakā-jālakesarāpūrṇatām gatam (āsīt).

20. (The darkness) was like a wandering cloud-bee within the blue lotus of the sky, having attained the fullness of a network of shining star-filaments.

Words meanings summery:

• नभो-नीलोत्पलस्यान्तर्भ्रमदभ्रमधुव्रतम् (nabho-nīlotpalasyāntarbhramadabhramadhuvratam) - (the darkness described as) a cloud-bee wandering within the sky-blue lotus. (having a cloud-bee wandering within the sky-blue lotus, (like) a cloud-bee wandering within the sky-blue lotus)

• प्रस्फुरत्-तारका-जालकेसरापूर्णताम् (prasphurat-tārakā-jālakesarāpūrṇatām) - The state of being filled with star-like filaments. (fullness of filaments of a network of shining stars)

• गतम् (gatam) - having reached, having attained (the state of fullness) (attained, gone, reached)

Words meanings and morphology

नभो-नीलोत्पलस्यान्तर्भ्रमदभ्रमधुव्रतम् (nabho-nīlotpalasyāntarbhramadabhramadhuvratam) - (the darkness described as) a cloud-bee wandering within the sky-blue lotus. (having a cloud-bee wandering within the sky-blue lotus, (like) a cloud-bee wandering within the sky-blue lotus)

(adjective)

Accusative, neuter, singular of nabhaḥ-nīlotpalasyāntarbhramadabhramadhuvrata

nabhaḥ-nīlotpalasyāntarbhramadabhramadhuvrata - one in which a cloud-bee wanders within the blue lotus of the sky

Bahuvrihi compound describing the darkness (tamas) or the night (rātri).

Compound type : bahuvrihi (nabhas+nīla+utpala+antar+bhramat+abhra+madhuvrata)

• nabhas – sky, atmosphere, heaven
  noun (neuter)
• nīla – blue, dark blue, black
  adjective (neuter)
• utpala – lotus, water-lily
  noun (neuter)
• antar – within, inside, between
  indeclinable
• bhramat – wandering, moving about
  adjective (masculine)
  Present Active Participle
  From root 'bhram'
  Root: bhram (class 1)
• abhra – cloud, sky
  noun (neuter)
• madhuvrata – bee, honey-bee
  noun (masculine)

Note: The compound ending is in accusative singular neuter, agreeing with the implied subject 'tamaḥ' or 'rātrim'.

प्रस्फुरत्-तारका-जालकेसरापूर्णताम् (prasphurat-tārakā-jālakesarāpūrṇatām) - The state of being filled with star-like filaments. (fullness of filaments of a network of shining stars)

(noun)

Accusative, feminine, singular of prasphurat-tārakā-jālakesarāpūrṇatā

prasphurat-tārakā-jālakesarāpūrṇatā - fullness of stamens/filaments from a network of shining stars

Tatpurusha compound, where 'tārakā-jāla-kesara' is a karmadhāraya compound itself.

Compound type : tatpurusha (prasphurat+tārakā+jāla+kesara+āpūrṇatā)

• prasphurat – shining forth, sparkling
  adjective (neuter)
  Present Active Participle
  From root 'sphur' with upasarga 'pra'
  Prefix: pra
  Root: sphur (class 6)
• tārakā – star
  noun (feminine)
• jāla – net, network, collection
  noun (neuter)
• kesara – stamen, filament (of a flower), mane
  noun (neuter)
• āpūrṇatā – fullness, completeness
  noun (feminine)
  From āpūrṇa (full) + -tā (suffix for abstract noun)
  Prefix: ā

Note: Direct object of 'gatam'.

गतम् (gatam) - having reached, having attained (the state of fullness) (attained, gone, reached)

(adjective)

Nominative, neuter, singular of gata

gata - gone, departed, reached, attained

Past Passive Participle

From root 'gam'

Root: gam (class 1)

Note: Modifies the implied subject, 'the darkness' (tamaḥ) or 'the night'.