योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-91, verse-38

कल्पान्तेषु क्वचित्सर्वजगद्भ्रमघनश्रमात् ।
खे कज्जलासिते लीनं रुद्रेभ इव विद्युता ॥ ३८ ॥

kalpānteṣu kvacitsarvajagadbhramaghanaśramāt ,
khe kajjalāsite līnaṃ rudrebha iva vidyutā 38

38. kalpānteṣu kvacit sarvajagat-bhrama-ghana-śramāt |
khe kajjala-asite līnam rudrebhyaḥ iva vidyutā ||

38. kvacit kalpānteṣu sarvajagatbhramaghanaśramāt khe
kajjala-asite (tat) vidyutā rudrebhyaḥ iva līnam (bhavati)

38. Sometimes, at the ends of aeons (kalpas), due to the intense fatigue of the cycles of all worlds, (the divine being) merges into the soot-dark sky, through lightning, as if (it were) lightning from the Rudras.

Words meanings summery:

• कल्पान्तेषु (kalpānteṣu) - at the ends of aeons (kalpas) (at the ends of aeons, at the dissolution of the universe)

• क्वचित् (kvacit) - sometimes, in some place

• सर्वजगत्-भ्रम-घन-श्रमात् (sarvajagat-bhrama-ghana-śramāt) - due to the intense fatigue of the cycles of all worlds (from the intense fatigue of the wandering of all worlds, from the great weariness of the universal cycle)

• खे (khe) - in the sky (in the sky, in space, in the atmosphere)

• कज्जल-असिते (kajjala-asite) - in the soot-dark (sky) (in the soot-black, in the dark as collyrium)

• लीनम् (līnam) - merges, becomes absorbed (merged, dissolved, absorbed, hidden, clung to)

• रुद्रेभ्यः (rudrebhyaḥ) - from the Rudras (from the Rudras, to the Rudras)

• इव (iva) - as if (like, as, as if)

• विद्युता (vidyutā) - through lightning (by lightning)

Words meanings and morphology

कल्पान्तेषु (kalpānteṣu) - at the ends of aeons (kalpas) (at the ends of aeons, at the dissolution of the universe)

(noun)

Locative, masculine, plural of kalpānta

kalpānta - end of an aeon, dissolution of the world

Compound of `kalpa` (aeon, cosmic cycle) and `anta` (end).

Compound type : tatpuruṣa (kalpa+anta)

• kalpa – aeon, cosmic period, an immense duration of time
  noun (masculine)
• anta – end, boundary, limit
  noun (masculine)

क्वचित् (kvacit) - sometimes, in some place

(indeclinable)

सर्वजगत्-भ्रम-घन-श्रमात् (sarvajagat-bhrama-ghana-śramāt) - due to the intense fatigue of the cycles of all worlds (from the intense fatigue of the wandering of all worlds, from the great weariness of the universal cycle)

(noun)

Ablative, masculine, singular of sarvajagat-bhrama-ghana-śrama

sarvajagat-bhrama-ghana-śrama - intense fatigue from the revolving/wandering of all worlds

Compound noun.

Compound type : tatpuruṣa (sarva+jagat+bhrama+ghana+śrama)

• sarva – all, whole, every
  pronoun (neuter)
• jagat – world, universe, moving, living
  noun (neuter)
  Present active participle (used as noun)
  Present active participle of `gam` (to go), used as a noun.
  Root: gam (class 1)
• bhrama – wandering, revolving, error, illusion
  noun (masculine)
  From root `bhram` (to wander).
  Root: bhram (class 1)
• ghana – dense, thick, intense, heavy
  adjective (neuter)
• śrama – fatigue, weariness, exertion, effort
  noun (masculine)
  From root `śram` (to be weary).
  Root: śram (class 4)

Note: Indicates the cause or reason for merging.

खे (khe) - in the sky (in the sky, in space, in the atmosphere)

(noun)

Locative, neuter, singular of kha

kha - sky, atmosphere, ether, space

कज्जल-असिते (kajjala-asite) - in the soot-dark (sky) (in the soot-black, in the dark as collyrium)

(adjective)

Locative, neuter, singular of kajjala-asita

kajjala-asita - black as soot, dark as collyrium

Compound of `kajjala` (soot) and `asita` (black).

Compound type : upapada tatpuruṣa (kajjala+asita)

• kajjala – soot, collyrium
  noun (neuter)
• asita – black, dark
  adjective (neuter)
  Primarily an adjective for 'black'.

Note: Agrees with `khe`.

लीनम् (līnam) - merges, becomes absorbed (merged, dissolved, absorbed, hidden, clung to)

(adjective)

Nominative, neuter, singular of līna

līna - merged, dissolved, absorbed, hidden, clung to

Past Passive Participle

From root `lī` (to cling, dissolve, merge).

Root: lī (class 4)

Note: Describes the state of the implied subject (divine being).

रुद्रेभ्यः (rudrebhyaḥ) - from the Rudras (from the Rudras, to the Rudras)

(noun)

Ablative, masculine, plural of rudra

rudra - a Vedic deity (often associated with storm, wind, hunt, destruction), a name of Shiva

Note: Used in a simile with `iva`.

इव (iva) - as if (like, as, as if)

(indeclinable)

विद्युता (vidyutā) - through lightning (by lightning)

(noun)

Instrumental, feminine, singular of vidyut

vidyut - lightning, flash of light

Note: Indicates the means or agent of merging.