महाभारतः mahābhārataḥ - book-8, chapter-65, verse-7

उभौ महेन्द्रस्य समानविक्रमावुभौ महेन्द्रप्रतिमौ महारथौ ।
महेन्द्रवज्रप्रतिमैश्च सायकैर्महेन्द्रवृत्राविव संप्रजह्रतुः ॥७॥

7. ubhau mahendrasya samānavikramā;vubhau mahendrapratimau mahārathau ,
mahendravajrapratimaiśca sāyakai;rmahendravṛtrāviva saṁprajahratuḥ.

7. ubhau mahendrasya samānavikramau
ubhau mahendrapratimau mahārathau
mahendravajrapratimaiḥ ca sāyakaiḥ
mahendravṛtrau iva samprajahratuḥ

7. ubhau mahārathau mahendrasya
samānavikramau ubhau mahendrapratimau
ca mahendravajrapratimaiḥ sāyakaiḥ
mahendravṛtrau iva samprajahratuḥ

7. Both of them, two great chariot-warriors, possessed valor equal to that of the great Indra and both were comparable to the great Indra himself. With arrows resembling Indra's thunderbolt (vajra), they attacked each other just like Indra and Vṛtra.

Words meanings summery:

• उभौ (ubhau) - both (of them)

• महेन्द्रस्य (mahendrasya) - of great Indra

• समानविक्रमौ (samānavikramau) - of equal valor, having equal prowess

• उभौ (ubhau) - both (of them)

• महेन्द्रप्रतिमौ (mahendrapratimau) - resembling great Indra, comparable to great Indra

• महारथौ (mahārathau) - two great chariot-warriors

• महेन्द्रवज्रप्रतिमैः (mahendravajrapratimaiḥ) - resembling Indra's thunderbolt (vajra)

• च (ca) - and

• सायकैः (sāyakaiḥ) - with arrows

• महेन्द्रवृत्रौ (mahendravṛtrau) - (like) Indra and Vṛtra

• इव (iva) - like, as, as it were

• सम्प्रजह्रतुः (samprajahratuḥ) - they two attacked, they two struck

Words meanings and morphology

उभौ (ubhau) - both (of them)

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

Note: Refers to Arjuna and Karṇa.

महेन्द्रस्य (mahendrasya) - of great Indra

(proper noun)

Genitive, masculine, singular of mahendra

mahendra - great Indra, a name for Indra

Compound type : karmadhāraya (mahā+indra)

• mahā – great, large
  adjective (feminine)
• indra – Indra (chief of the gods)
  proper noun (masculine)

Note: Used in comparison for valor.

समानविक्रमौ (samānavikramau) - of equal valor, having equal prowess

(adjective)

Nominative, masculine, dual of samānavikrama

samānavikrama - of equal valor, having equal prowess

Compound type : bahuvrīhi (samāna+vikrama)

• samāna – equal, similar
  adjective (masculine)
• vikrama – valor, prowess, courage
  noun (masculine)
  Prefix: vi
  Root: kram (class 1)

Note: Qualifies ubhau.

उभौ (ubhau) - both (of them)

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

Note: Refers to Arjuna and Karṇa.

महेन्द्रप्रतिमौ (mahendrapratimau) - resembling great Indra, comparable to great Indra

(adjective)

Nominative, masculine, dual of mahendrapratima

mahendrapratima - resembling great Indra

Compound type : tatpuruṣa (mahendra+pratima)

• mahendra – great Indra
  proper noun (masculine)
• pratima – resembling, like, image
  adjective (masculine)
  Prefix: prati
  Root: mā (class 2)

Note: Qualifies ubhau.

महारथौ (mahārathau) - two great chariot-warriors

(noun)

Nominative, masculine, dual of mahāratha

mahāratha - great chariot-warrior, warrior fighting from a great chariot

Compound type : karmadhāraya (mahā+ratha)

• mahā – great, large
  adjective (feminine)
• ratha – chariot, warrior (by extension)
  noun (masculine)

Note: Subject.

महेन्द्रवज्रप्रतिमैः (mahendravajrapratimaiḥ) - resembling Indra's thunderbolt (vajra)

(adjective)

Instrumental, masculine, plural of mahendravajrapratima

mahendravajrapratima - resembling Indra's thunderbolt

Compound type : tatpuruṣa (mahendra+vajra+pratima)

• mahendra – great Indra
  proper noun (masculine)
• vajra – thunderbolt, diamond
  noun (masculine)
• pratima – resembling, like, image
  adjective (masculine)
  Prefix: prati
  Root: mā (class 2)

Note: Qualifies sāyakaiḥ.

च (ca) - and

(indeclinable)

सायकैः (sāyakaiḥ) - with arrows

(noun)

Instrumental, masculine, plural of sāyaka

sāyaka - arrow

Root: si

Note: Means by which they attacked.

महेन्द्रवृत्रौ (mahendravṛtrau) - (like) Indra and Vṛtra

(proper noun)

Nominative, masculine, dual of mahendravṛtra

mahendravṛtra - Indra and Vṛtra

Compound type : dvandva (mahendra+vṛtra)

• mahendra – great Indra
  proper noun (masculine)
• vṛtra – Vṛtra (a demon slain by Indra)
  proper noun (masculine)

Note: Used in a simile with iva.

इव (iva) - like, as, as it were

(indeclinable)

सम्प्रजह्रतुः (samprajahratuḥ) - they two attacked, they two struck

(verb)

3rd person , dual, active, perfect (liṭ) of han

Perfect tense, 3rd person dual, parasmaipada, from sam-pra-han

Prefixes: sam+pra

Root: han (class 2)

Note: Main verb of the sentence.