योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-150, verse-42

लग्नोऽग्निर्धूमधूम्राभ्रसाम्बराम्बरडम्बरः ।
वलद्वलचलालातचक्रसूर्येन्दुमण्डलः ॥ ४२ ॥

lagno'gnirdhūmadhūmrābhrasāmbarāmbaraḍambaraḥ ,
valadvalacalālātacakrasūryendumaṇḍalaḥ 42

42. lagnaḥ agniḥ dhūmadhūmrābhrasāmbarāmbaraḍambaraḥ
valadvalacalālātacakrasūryendumandalaḥ

42. agniḥ lagnaḥ dhūmadhūmrābhrasāmbarāmbaraḍambaraḥ
valadvalacalālātacakrasūryendumandalaḥ

42. A fire broke out, its vast, sky-like expanse covered by smoke-gray clouds. Its whirling, moving firebrands formed circles that resembled the sun and moon.

Words meanings summery:

• लग्नः (lagnaḥ) - caught (e.g., fire caught) (attached, joined, begun, caught)

• अग्निः (agniḥ) - a fire, conflagration (fire, Agni (god))

• धूमधूम्राभ्रसाम्बराम्बरडम्बरः (dhūmadhūmrābhrasāmbarāmbaraḍambaraḥ) - its vast, sky-like expanse covered by smoke-gray clouds (whose sky-like display/expanse is covered with smoke-gray clouds)

• वलद्वलचलालातचक्रसूर्येन्दुमन्दलः (valadvalacalālātacakrasūryendumandalaḥ) - its whirling, moving firebrands formed circles resembling the sun and moon (whose circles of whirling, moving firebrands are like the disks of the sun and moon)

Words meanings and morphology

लग्नः (lagnaḥ) - caught (e.g., fire caught) (attached, joined, begun, caught)

(adjective)

Nominative, masculine, singular of lagna

lagna - attached, fixed, joined, begun

Past Passive Participle

from √lag (to attach, adhere)

Root: √lag (class 1)

Note: agrees with 'agniḥ'

अग्निः (agniḥ) - a fire, conflagration (fire, Agni (god))

(noun)

Nominative, masculine, singular of agni

agni - fire, god of fire

धूमधूम्राभ्रसाम्बराम्बरडम्बरः (dhūmadhūmrābhrasāmbarāmbaraḍambaraḥ) - its vast, sky-like expanse covered by smoke-gray clouds (whose sky-like display/expanse is covered with smoke-gray clouds)

(adjective)

Nominative, masculine, singular of dhūmadhūmrābhrasāmbarāmbaraḍambara

dhūmadhūmrābhrasāmbarāmbaraḍambara - whose display of the sky is covered with smoke-gray clouds

Compound type : bahuvrīhi (dhūmadhūmrābhra+sāmbara+ambaraḍambara)

• dhūmadhūmrābhra – smoke-gray clouds
  noun (neuter)
• sāmbara – with a covering/sky, covered with sky
  adjective (masculine)
  Prefix: sa
• ambaraḍambara – sky's display, vastness of the sky
  noun (masculine)

Note: describes 'agniḥ'

वलद्वलचलालातचक्रसूर्येन्दुमन्दलः (valadvalacalālātacakrasūryendumandalaḥ) - its whirling, moving firebrands formed circles resembling the sun and moon (whose circles of whirling, moving firebrands are like the disks of the sun and moon)

(adjective)

Nominative, masculine, singular of valadvalacalālātacakrasūryendumandala

valadvalacalālātacakrasūryendumandala - whose circles of whirling, moving firebrands are the sun and moon disks

Compound type : bahuvrīhi (valat+vala+cala+alātacakra+sūryendumaṇḍala)

• valat – whirling, waving, flickering
  adjective (masculine)
  Present Active Participle
  from √val (to move, turn)
  Root: √val (class 1)
• vala – a fold, wrinkle, circle, whirl
  noun (masculine)
• cala – moving, trembling, unsteady
  adjective (masculine)
  Root: √cal (class 1)
• alātacakra – wheel/circle of firebrands
  noun (neuter)
• sūryendumaṇḍala – disks of sun and moon
  noun (neuter)

Note: describes 'agniḥ'