महाभारतः mahābhārataḥ - book-9, chapter-54, verse-26

उभौ सदृशकर्माणौ रणे सुन्दोपसुन्दयोः ।
तथैव कालस्य समौ मृत्योश्चैव परंतपौ ॥२६॥

26. ubhau sadṛśakarmāṇau raṇe sundopasundayoḥ ,
tathaiva kālasya samau mṛtyoścaiva paraṁtapau.

26. ubhau sadṛśakarmāṇau raṇe sunda-upasundayoḥ
tathā eva kālasya samau mṛtyoḥ ca eva paraṃtapau

26. ubhau raṇe sunda-upasundayoḥ sadṛśakarmāṇau
tathā eva paraṃtapau kālasya mṛtyoḥ ca eva samau

26. Both were similar in their deeds in battle, like Sunda and Upasunda. Just so, these two vanquishers of foes were equal to Time and Death (in their destructive power).

Words meanings summery:

• उभौ (ubhau) - both

• सदृशकर्माणौ (sadṛśakarmāṇau) - similar in actions, having similar deeds

• रणे (raṇe) - in battle, in war

• सुन्द-उपसुन्दयोः (sunda-upasundayoḥ) - of Sunda and Upasunda

• तथा (tathā) - similarly, in the same way

• एव (eva) - indeed, certainly, only

• कालस्य (kālasya) - of Time

• समौ (samau) - equal, similar

• मृत्योः (mṛtyoḥ) - of Death

• च (ca) - and

• एव (eva) - indeed, certainly

• परंतपौ (paraṁtapau) - tormentors of enemies, powerful heroes

Words meanings and morphology

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

सदृशकर्माणौ (sadṛśakarmāṇau) - similar in actions, having similar deeds

(adjective)

Nominative, masculine, dual of sadṛśakarman

sadṛśakarman - one whose actions (karma) are similar, having similar deeds

Compound type : bahuvrihi (sadṛśa+karman)

• sadṛśa – similar, like, equal
  adjective
• karman – action, deed, work, ritual (karma)
  noun (neuter)
  Root: kṛ (class 8)

रणे (raṇe) - in battle, in war

(noun)

Locative, masculine, singular of raṇa

raṇa - battle, war, combat, conflict

Root: raṇ (class 1)

सुन्द-उपसुन्दयोः (sunda-upasundayoḥ) - of Sunda and Upasunda

(proper noun)

Genitive, masculine, dual of sunda-upasunda

sunda-upasunda - Sunda and Upasunda (two powerful demon brothers)

Compound type : dvandva (sunda+upasunda)

• sunda – Sunda (a demon)
  proper noun (masculine)
• upasunda – Upasunda (a demon, brother of Sunda)
  proper noun (masculine)

तथा (tathā) - similarly, in the same way

(indeclinable)

एव (eva) - indeed, certainly, only

(indeclinable)

कालस्य (kālasya) - of Time

(noun)

Genitive, masculine, singular of kāla

kāla - time, period, proper time, Death (personified)

समौ (samau) - equal, similar

(adjective)

Nominative, masculine, dual of sama

sama - equal, same, similar, like

मृत्योः (mṛtyoḥ) - of Death

(noun)

Genitive, masculine, singular of mṛtyu

mṛtyu - death, mortality, Death (personified)

Root: mṛ (class 6)

च (ca) - and

(indeclinable)

एव (eva) - indeed, certainly

(indeclinable)

परंतपौ (paraṁtapau) - tormentors of enemies, powerful heroes

(adjective)

Nominative, masculine, dual of paraṃtapa

paraṁtapa - scorcher/tormentor of foes, conqueror of enemies

Compound type : tatpurusha (param+tapa)

• para – enemy, foe, other
  noun (masculine)
• tapa – tormenting, heating, asceticism (tapas)
  noun (masculine)
  from root tap
  Root: tap (class 1)

Note: Often used as an epithet for powerful warriors.