योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-87, verse-6

शान्ततेजस्तमःपुञ्जं विगतार्केन्दुतारकम् ।
अधूमाभ्ररजःस्वच्छमनन्तं शरदीव खम् ॥ ६ ॥

śāntatejastamaḥpuñjaṃ vigatārkendutārakam ,
adhūmābhrarajaḥsvacchamanantaṃ śaradīva kham 6

6. śāntatejastamaḥpuñjam vigatārkendutārakam
adhūmābhrarajaḥsvaccham anantam śaradī iva kham

6. śaradī iva anantam kham śāntatejastamaḥpuñjam
vigatārkendutārakam adhūmābhrarajaḥsvaccham

6. Like the infinite sky (kha) in autumn, whose mass of radiance and darkness is pacified, from which the sun, moon, and stars have departed, and which is pure, free from smoke, clouds, and dust.

Words meanings summery:

• शान्ततेजस्तमःपुञ्जम् (śāntatejastamaḥpuñjam) - whose mass of radiance and darkness is pacified

• विगतार्केन्दुतारकम् (vigatārkendutārakam) - from which the sun, moon, and stars have departed

• अधूमाभ्ररजःस्वच्छम् (adhūmābhrarajaḥsvaccham) - clean from smoke, clouds, and dust; pure, clear

• अनन्तम् (anantam) - endless, infinite, unbounded

• शरदी (śaradī) - in autumn

• इव (iva) - like, as, as if

• खम् (kham) - sky, ether, space

Words meanings and morphology

शान्ततेजस्तमःपुञ्जम् (śāntatejastamaḥpuñjam) - whose mass of radiance and darkness is pacified

(adjective)

Nominative, neuter, singular of śāntatejastamaḥpuñja

śāntatejastamaḥpuñja - whose mass of radiance and darkness is pacified

Compound type : bahuvrihi (śānta+tejas+tamas+puñja)

• śānta – pacified, calm, tranquil
  adjective (masculine)
  Past Passive Participle
  Derived from root śam (to be calm)
  Root: śam (class 4)
• tejas – radiance, brilliance, energy
  noun (neuter)
• tamas – darkness, gloom, ignorance
  noun (neuter)
• puñja – mass, heap, collection
  noun (masculine)

विगतार्केन्दुतारकम् (vigatārkendutārakam) - from which the sun, moon, and stars have departed

(adjective)

Nominative, neuter, singular of vigatārkendutāraka

vigatārkendutāraka - from which the sun, moon, and stars have departed/disappeared

Compound type : bahuvrihi (vigata+arka+indu+tāraka)

• vigata – departed, gone, disappeared
  adjective (masculine)
  Past Passive Participle
  Derived from root gam (to go) with prefix vi-
  Prefix: vi
  Root: gam (class 1)
• arka – sun, ray, praise
  noun (masculine)
• indu – moon
  noun (masculine)
• tāraka – star, pupil of the eye
  noun (neuter)

अधूमाभ्ररजःस्वच्छम् (adhūmābhrarajaḥsvaccham) - clean from smoke, clouds, and dust; pure, clear

(adjective)

Nominative, neuter, singular of adhūmābhrarajaḥsvaccha

adhūmābhrarajaḥsvaccha - clean from smoke, clouds, and dust; pure, clear

Compound type : bahuvrihi (a+dhūma+abhra+rajas+svaccha)

• a – not, non-, un-
  indeclinable
  negation prefix
• dhūma – smoke, vapor
  noun (masculine)
• abhra – cloud
  noun (neuter)
• rajas – dust, pollen, passion
  noun (neuter)
• svaccha – clean, pure, transparent
  adjective (masculine)
  From su- (good) + accha (clear)
  Prefix: su

अनन्तम् (anantam) - endless, infinite, unbounded

(adjective)

Nominative, neuter, singular of ananta

ananta - endless, infinite, unbounded; a name of Vishnu/Shesha

Compound type : bahuvrihi (a+anta)

• a – not, non-, un-
  indeclinable
  negation prefix
• anta – end, limit, boundary
  noun (masculine)

शरदी (śaradī) - in autumn

(noun)

Locative, feminine, singular of śarad

śarad - autumn, year

इव (iva) - like, as, as if

(indeclinable)

खम् (kham) - sky, ether, space

(noun)

Nominative, neuter, singular of kha

kha - sky, ether, space, air