महाभारतः mahābhārataḥ - book-7, chapter-129, verse-28

तत्र नागा रथाश्चैव जाम्बूनदविभूषिताः ।
निशायां प्रत्यदृश्यन्त मेघा इव सविद्युतः ॥२८॥

28. tatra nāgā rathāścaiva jāmbūnadavibhūṣitāḥ ,
niśāyāṁ pratyadṛśyanta meghā iva savidyutaḥ.

28. tatra nāgāḥ rathāḥ ca eva jāmbū-nada-vibhūṣitāḥ
niśāyām prati-adṛśyanta meghāḥ iva sa-vidyutaḥ

28. tatra nāgāḥ rathāḥ ca eva jāmbū-nada-vibhūṣitāḥ
niśāyām sa-vidyutaḥ meghāḥ iva prati-adṛśyanta

28. There, elephants and chariots, adorned with gold, appeared in the night like clouds accompanied by lightning.

Words meanings summery:

• तत्र (tatra) - there (there, in that place)

• नागाः (nāgāḥ) - elephants (in a military context) (elephants, snakes)

• रथाः (rathāḥ) - chariots (chariots, cars)

• च (ca) - and

• एव (eva) - indeed, also (indeed, only, just)

• जाम्बू-नद-विभूषिताः (jāmbū-nada-vibhūṣitāḥ) - adorned with gold (adorned with Jambūnada gold)

• निशायाम् (niśāyām) - in the night (in the night, during the night)

• प्रति-अदृश्यन्त (prati-adṛśyanta) - appeared (they were seen, they appeared)

• मेघाः (meghāḥ) - clouds

• इव (iva) - like (like, as, as if)

• स-विद्युतः (sa-vidyutaḥ) - accompanied by lightning (with lightning, accompanied by lightning)

Words meanings and morphology

तत्र (tatra) - there (there, in that place)

(indeclinable)

From the pronoun base `tad` with the locative suffix `tra`.

Note: Refers to the location where the army was seen.

नागाः (nāgāḥ) - elephants (in a military context) (elephants, snakes)

(noun)

Nominative, masculine, plural of nāga

nāga - snake, serpent, elephant, mountain

Note: One of the subjects of `pratyadṛśyanta`.

रथाः (rathāḥ) - chariots (chariots, cars)

(noun)

Nominative, masculine, plural of ratha

ratha - chariot, car, vehicle

From root `ram` (to delight) or `rāj` (to shine).

Root: ram (class 1)

Note: One of the subjects of `pratyadṛśyanta`.

च (ca) - and

(indeclinable)

Conjunction.

Note: Connects `nāgāḥ` and `rathāḥ`.

एव (eva) - indeed, also (indeed, only, just)

(indeclinable)

Emphatic particle.

जाम्बू-नद-विभूषिताः (jāmbū-nada-vibhūṣitāḥ) - adorned with gold (adorned with Jambūnada gold)

(adjective)

Nominative, masculine, plural of jāmbū-nada-vibhūṣita

jāmbū-nada-vibhūṣita - adorned with Jambūnada (finest) gold

Past Passive Participle (for vibhūṣita)

Tatpuruṣa compound: `jāmbūnada` (a superior kind of gold) + `vibhūṣita` (adorned).

Compound type : tatpuruṣa (jāmbūnada+vibhūṣita)

• jāmbūnada – gold (specifically from the river Jambū)
  noun (neuter)
  Refers to a superior type of gold, traditionally found near the river Jambū.
• vibhūṣita – adorned, decorated, embellished
  adjective (masculine)
  Past Passive Participle
  Formed from the root `bhūṣ` (to adorn) with the prefix `vi`.
  Prefix: vi
  Root: bhūṣ (class 10)

Note: Agrees with `nāgāḥ` and `rathāḥ`.

निशायाम् (niśāyām) - in the night (in the night, during the night)

(noun)

Locative, feminine, singular of niśā

niśā - night

प्रति-अदृश्यन्त (prati-adṛśyanta) - appeared (they were seen, they appeared)

(verb)

3rd person , plural, passive, past imperfect (laṅ) of dṛś

Imperfect tense, 3rd person plural, passive voice

From verb root `dṛś` (class 1, `paśyati`) with prefix `prati`. Passive voice is formed with the `ya` affix and `ātmanepada` endings.

Prefix: prati

Root: dṛś (class 1)

Note: Agrees with the plural subjects `nāgāḥ` and `rathāḥ`.

मेघाः (meghāḥ) - clouds

(noun)

Nominative, masculine, plural of megha

megha - cloud

From root `mih` (to sprinkle, urinate).

Root: mih (class 1)

Note: The object of comparison (clouds) for the elephants and chariots.

इव (iva) - like (like, as, as if)

(indeclinable)

Particle expressing comparison.

Note: Introduces the simile.

स-विद्युतः (sa-vidyutaḥ) - accompanied by lightning (with lightning, accompanied by lightning)

(adjective)

Nominative, masculine, plural of sa-vidyut

sa-vidyut - with lightning, flashing with lightning

Bahuvrīhi compound: `sa` (with) + `vidyut` (lightning).

Compound type : bahuvrīhi (sa+vidyut)

• sa – with, accompanied by
  indeclinable
  Prefix meaning 'with', 'together with', used as the first member of bahuvrīhi compounds.
• vidyut – lightning, flash
  noun (feminine)
  From root `dyut` (to shine) with prefix `vi`.
  Prefix: vi
  Root: dyut (class 1)

Note: Agrees with `meghāḥ` (clouds).