महाभारतः mahābhārataḥ - book-8, chapter-51, verse-31

दर्शयित्वात्मनो रूपं रुद्रोपेन्द्रसमं युधि ।
पाण्डवानामनीकानि प्रविगाह्य व्यशातयत् ॥३१॥

31. darśayitvātmano rūpaṁ rudropendrasamaṁ yudhi ,
pāṇḍavānāmanīkāni pravigāhya vyaśātayat.

31. darśayitvā ātmanaḥ rūpam rudropendrasamam
yudhi pāṇḍavānām anīkāni pravigāhya vyaśātayat

31. (saḥ) yudhi ātmanaḥ rudropendrasamam rūpam
darśayitvā pāṇḍavānām anīkāni pravigāhya vyaśātayat

31. After displaying his own form (ātman), which was like that of Rudra and Upendra, in battle, he, having deeply penetrated the armies of the Pandavas, utterly scattered them.

Words meanings summery:

• दर्शयित्वा (darśayitvā) - having shown, having displayed

• आत्मनः (ātmanaḥ) - of his own self (of the self, of oneself)

• रूपम् (rūpam) - form, appearance, beauty

• रुद्रोपेन्द्रसमम् (rudropendrasamam) - equal to Rudra and Upendra

• युधि (yudhi) - in battle, in war

• पाण्डवानाम् (pāṇḍavānām) - of the Pandavas

• अनीकानि (anīkāni) - armies, hosts, fronts

• प्रविगाह्य (pravigāhya) - having penetrated, having entered deeply

• व्यशातयत् (vyaśātayat) - he utterly scattered (he scattered, he destroyed)

Words meanings and morphology

दर्शयित्वा (darśayitvā) - having shown, having displayed

(indeclinable)

absolutive (causative)

Formed from the causative stem of root dṛś 'to see' with suffix -tvā.

Root: dṛś (class 1)

आत्मनः (ātmanaḥ) - of his own self (of the self, of oneself)

(noun)

Genitive, masculine, singular of ātman

ātman - self, soul, spirit, essence

Note: Possessive for rūpam.

रूपम् (rūpam) - form, appearance, beauty

(noun)

Accusative, neuter, singular of rūpa

rūpa - form, shape, appearance, beauty

Note: Object of darśayitvā.

रुद्रोपेन्द्रसमम् (rudropendrasamam) - equal to Rudra and Upendra

(adjective)

Accusative, neuter, singular of rudropendrasama

rudropendrasama - equal to Rudra and Upendra

Compound type : tatpuruṣa (rudra+upendra+sama)

• rudra – Rudra (a deity, associated with Shiva)
  proper noun (masculine)
• upendra – Upendra (a name for Vishnu/Krishna)
  proper noun (masculine)
• sama – equal, similar, like
  adjective

Note: Qualifies rūpam.

युधि (yudhi) - in battle, in war

(noun)

Locative, feminine, singular of yudh

yudh - battle, war, fight

पाण्डवानाम् (pāṇḍavānām) - of the Pandavas

(proper noun)

Genitive, masculine, plural of pāṇḍava

pāṇḍava - descendant of Pandu, the Pandavas

Note: Possessive for anīkāni.

अनीकानि (anīkāni) - armies, hosts, fronts

(noun)

Accusative, neuter, plural of anīka

anīka - army, host, battle array

Note: Object of pravigāhya.

प्रविगाह्य (pravigāhya) - having penetrated, having entered deeply

(indeclinable)

absolutive

Formed from root gāh 'to plunge, enter' with prefixes pra- and vi-.

Prefixes: pra+vi

Root: gāh (class 1)

व्यशातयत् (vyaśātayat) - he utterly scattered (he scattered, he destroyed)

(verb)

3rd person , singular, active, past imperfect (causative) (laṅ) of śat

Causative from root śat 'to shatter'. Prefixed with vi-.

Prefix: vi

Root: śat (class 10)

Note: The prefix vi intensifies the action of scattering or destroying.