महाभारतः mahābhārataḥ - book-6, chapter-106, verse-28

उभौ हि रथिनां श्रेष्ठावुभौ भारत दुर्जयौ ।
उभौ चन्द्रार्कसदृशौ कान्त्या दीप्त्या च भारत ॥२८॥

28. ubhau hi rathināṁ śreṣṭhāvubhau bhārata durjayau ,
ubhau candrārkasadṛśau kāntyā dīptyā ca bhārata.

28. ubhau hi rathinām śreṣṭhau ubhau bhārata durjayau
ubhau candra-arka-sadṛśau kāntyā dīptyā ca bhārata

28. hi bhārata bhārata ubhau rathinām śreṣṭhau ubhau
durjayau ca ubhau kāntyā dīptyā candra-arka-sadṛśau

28. Indeed, both are the best of charioteers; both, O Bhārata, are unconquerable. Both are like the moon and the sun in splendor and radiance, O Bhārata.

Words meanings summery:

• उभौ (ubhau) - both (masculine/dual)

• हि (hi) - indeed, surely, for, because

• रथिनाम् (rathinām) - of charioteers, among charioteers

• श्रेष्ठौ (śreṣṭhau) - best, most excellent

• उभौ (ubhau) - both (masculine/dual)

• भारत (bhārata) - O Dhṛtarāṣṭra (O descendant of Bharata (vocative))

• दुर्जयौ (durjayau) - unconquerable, difficult to defeat

• उभौ (ubhau) - both (masculine/dual)

• चन्द्र-अर्क-सदृशौ (candra-arka-sadṛśau) - resembling the moon and the sun

• कान्त्या (kāntyā) - by splendor, with beauty

• दीप्त्या (dīptyā) - by radiance, with brilliance

• च (ca) - and

• भारत (bhārata) - O Dhṛtarāṣṭra (O descendant of Bharata (vocative))

Words meanings and morphology

उभौ (ubhau) - both (masculine/dual)

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

हि (hi) - indeed, surely, for, because

(indeclinable)

रथिनाम् (rathinām) - of charioteers, among charioteers

(noun)

Genitive, masculine, plural of rathin

rathin - charioteer, warrior fighting from a chariot

श्रेष्ठौ (śreṣṭhau) - best, most excellent

(adjective)

Nominative, masculine, dual of śreṣṭha

śreṣṭha - best, most excellent, chief, principal

Superlative form from śrī (prosperity, excellence).

उभौ (ubhau) - both (masculine/dual)

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

भारत (bhārata) - O Dhṛtarāṣṭra (O descendant of Bharata (vocative))

(proper noun)

Vocative, masculine, singular of bhārata

bhārata - descendant of Bharata, an Indian, related to Bharata

दुर्जयौ (durjayau) - unconquerable, difficult to defeat

(adjective)

Nominative, masculine, dual of durjaya

durjaya - hard to conquer, unconquerable, invincible

Compound type : prādi-samāsa (dur+jaya)

• dur – bad, ill, difficult, hard
  indeclinable
• jaya – victory, conquest, triumph
  noun (masculine)
  Root: ji (class 1)

उभौ (ubhau) - both (masculine/dual)

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

चन्द्र-अर्क-सदृशौ (candra-arka-sadṛśau) - resembling the moon and the sun

(adjective)

Nominative, masculine, dual of candra-arka-sadṛśa

candra-arka-sadṛśa - resembling the moon and the sun

Compound type : dvandva-tatpuruṣa (candra+arka+sadṛśa)

• candra – moon
  noun (masculine)
• arka – sun, ray, copper
  noun (masculine)
• sadṛśa – resembling, like, similar, equal to
  adjective (masculine)

कान्त्या (kāntyā) - by splendor, with beauty

(noun)

Instrumental, feminine, singular of kānti

kānti - splendor, beauty, luster, charm

दीप्त्या (dīptyā) - by radiance, with brilliance

(noun)

Instrumental, feminine, singular of dīpti

dīpti - radiance, brilliance, light, luster

च (ca) - and

(indeclinable)

भारत (bhārata) - O Dhṛtarāṣṭra (O descendant of Bharata (vocative))

(proper noun)

Vocative, masculine, singular of bhārata

bhārata - descendant of Bharata, an Indian, related to Bharata