योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-24, verse-44

अविनाशिबृहत्तेजः क्वचिदर्कानलोपमम् ।
हिमानीजठराशीतं क्वचिच्चन्द्रादिसद्मसु ॥ ४४ ॥

avināśibṛhattejaḥ kvacidarkānalopamam ,
himānījaṭharāśītaṃ kvaciccandrādisadmasu 44

44. avināśi-bṛhat-tejaḥ kvacit arka-anala-upamam
himānī-jaṭhara-āśītam kvacit candra-ādi-sadmasu

44. kvacit avināśi-bṛhat-tejaḥ arka-anala-upamam,
kvacit himānī-jaṭhara-āśītam candra-ādi-sadmasu.

44. Elsewhere, there is imperishable, immense radiance, comparable to the sun and fire. And sometimes, in the abodes of the moon and similar celestial bodies, it is intensely cold, like the heart of a glacier.

Words meanings summery:

• अविनाशि-बृहत्-तेजः (avināśi-bṛhat-tejaḥ) - imperishable, immense radiance (imperishable great radiance/energy)

• क्वचित् (kvacit) - elsewhere (sometimes, somewhere, in some places)

• अर्क-अनल-उपमम् (arka-anala-upamam) - comparable to the sun and fire (like the sun and fire)

• हिमानी-जठर-आशीतम् (himānī-jaṭhara-āśītam) - intensely cold, like the heart of a glacier (intensely cold as the interior of a glacier)

• क्वचित् (kvacit) - sometimes (sometimes, somewhere, in some places)

• चन्द्र-आदि-सद्मसु (candra-ādi-sadmasu) - in the abodes of the moon and similar celestial bodies (in the abodes of the moon and others (celestial bodies))

Words meanings and morphology

अविनाशि-बृहत्-तेजः (avināśi-bṛhat-tejaḥ) - imperishable, immense radiance (imperishable great radiance/energy)

(noun)

Nominative, neuter, singular of avināśi-bṛhat-tejas

avināśi-bṛhat-tejas - imperishable great radiance

Compound type : karma-dhāraya (avināśin+bṛhat+tejas)

• avināśin – imperishable, indestructible
  adjective
  negation 'a' + vināśin (perishable)
• bṛhat – great, vast, large
  adjective
• tejas – radiance, brilliance, energy, splendor
  noun (neuter)
  Root: tij (class 1)

क्वचित् (kvacit) - elsewhere (sometimes, somewhere, in some places)

(indeclinable)

अर्क-अनल-उपमम् (arka-anala-upamam) - comparable to the sun and fire (like the sun and fire)

(adjective)

Accusative, neuter, singular of arka-anala-upama

arka-anala-upama - like the sun and fire

Compound type : tatpuruṣa (arka-anala+upama)

• arka – sun
  noun (masculine)
  Root: arc (class 1)
• anala – fire
  noun (masculine)
• upama – comparable, similar, like
  adjective

Note: modifies an implied 'place' or 'radiance'

हिमानी-जठर-आशीतम् (himānī-jaṭhara-āśītam) - intensely cold, like the heart of a glacier (intensely cold as the interior of a glacier)

(adjective)

Accusative, neuter, singular of himānī-jaṭhara-āśīta

himānī-jaṭhara-āśīta - intensely cold like the interior of a glacier

Compound type : tatpuruṣa (himānī-jaṭhara+āśīta)

• himānī – mass of snow, ice, glacier
  noun (feminine)
• jaṭhara – stomach, interior, core
  noun (neuter)
• āśīta – very cold, intensely cold
  adjective
  intensified form of śīta (cold)
  Prefix: ā
  Root: śī (class 2)

Note: modifies an implied 'place' or 'condition'

क्वचित् (kvacit) - sometimes (sometimes, somewhere, in some places)

(indeclinable)

चन्द्र-आदि-सद्मसु (candra-ādi-sadmasu) - in the abodes of the moon and similar celestial bodies (in the abodes of the moon and others (celestial bodies))

(noun)

Locative, neuter, plural of candra-ādi-sadman

candra-ādi-sadman - abodes of the moon and so on

Compound type : tatpuruṣa (candra-ādi+sadman)

• candra – moon
  noun (masculine)
• ādi – beginning, and so on, others
  indeclinable
• sadman – abode, dwelling, house
  noun (neuter)