महाभारतः mahābhārataḥ - book-5, chapter-149, verse-26

यमदूतसमान्वेगे निपाते पावकोपमान् ।
रामेणाजौ विषहितान्वज्रनिष्पेषदारुणान् ॥२६॥

26. yamadūtasamānvege nipāte pāvakopamān ,
rāmeṇājau viṣahitānvajraniṣpeṣadāruṇān.

26. yamadūtasamānvege nipāte pāvakopamān
rāmeṇa ajau viṣahitān vajraniṣpeṣadāruṇān

26. (sāyakāḥ) yamadūtasamānvege (bhavanti),
nipāte ca pāvakopamān (bhavanti); rāmeṇa ajau viṣahitān,
vajraniṣpeṣadāruṇān (ca bhavanti).

26. Their speed is like that of Yama's messengers; in impact, they resemble fire. They are difficult to endure (viṣahitān) even by Rama (rāmeṇa) in battle (ājau) and are dreadful like the shattering of a thunderbolt (vajraniṣpeṣadāruṇān).

Words meanings summery:

• यमदूतसमान्वेगे (yamadūtasamānvege) - in speed like Yama's messengers

• निपाते (nipāte) - in falling, in impact, at the fall

• पावकोपमान् (pāvakopamān) - resembling fire, fire-like

• रामेण (rāmeṇa) - by Rama

• अजौ (ajau) - in battle, in war

• विषहितान् (viṣahitān) - difficult to bear, hard to endure

• वज्रनिष्पेषदारुणान् (vajraniṣpeṣadāruṇān) - dreadful like the shattering of a thunderbolt

Words meanings and morphology

यमदूतसमान्वेगे (yamadūtasamānvege) - in speed like Yama's messengers

(noun)

Locative, masculine, singular of yamadūtasamānvega

yamadūtasamānvega - whose speed is equal to Yama's messengers

Compound type : bahuvrihi (yama+dūta+samāna+vega)

• yama – Yama (god of death)
  proper noun (masculine)
• dūta – messenger, envoy
  noun (masculine)
• samāna – equal, similar
  adjective (masculine)
• vega – speed, velocity, force
  noun (masculine)

निपाते (nipāte) - in falling, in impact, at the fall

(noun)

Locative, masculine, singular of nipāta

nipāta - fall, descent, impact, striking down

from ni- + √pat (to fall)

Prefix: ni

Root: pat (class 1)

पावकोपमान् (pāvakopamān) - resembling fire, fire-like

(adjective)

Accusative, masculine, plural of pāvakopama

pāvakopama - resembling fire, fire-like

Compound type : tatpurusha (pāvaka+upama)

• pāvaka – fire, purifying
  noun (masculine)
• upama – similar, like, resembling
  adjective (masculine)
  Prefix: upa
  Root: mā (class 2)

रामेण (rāmeṇa) - by Rama

(proper noun)

Instrumental, masculine, singular of rāma

rāma - Rama (proper name)

अजौ (ajau) - in battle, in war

(noun)

Locative, masculine, singular of aja

aja - battle, war, combat

Root: aj (class 1)

विषहितान् (viṣahitān) - difficult to bear, hard to endure

(adjective)

Accusative, masculine, plural of viṣahita

viṣahita - endured, borne, difficult to endure

Past Passive Participle

from vi- + √sah (to bear, endure)

Prefix: vi

Root: sah (class 1)

वज्रनिष्पेषदारुणान् (vajraniṣpeṣadāruṇān) - dreadful like the shattering of a thunderbolt

(adjective)

Accusative, masculine, plural of vajraniṣpeṣadāruṇa

vajraniṣpeṣadāruṇa - dreadful like the shattering of a thunderbolt

Compound type : tatpurusha (vajra+niṣpeṣa+dāruṇa)

• vajra – thunderbolt, diamond
  noun (masculine)
• niṣpeṣa – crushing, shattering, grinding
  noun (masculine)
  from ni- + √piṣ (to grind)
  Prefix: ni
  Root: piṣ (class 7)
• dāruṇa – dreadful, terrible, fierce
  adjective (masculine)