महाभारतः mahābhārataḥ - book-7, chapter-90, verse-40

तापयन्तौ शरैस्तीक्ष्णैरन्योन्यं तौ महारथौ ।
युगान्तप्रतिमौ वीरौ रेजतुर्भास्कराविव ॥४०॥

40. tāpayantau śaraistīkṣṇairanyonyaṁ tau mahārathau ,
yugāntapratimau vīrau rejaturbhāskarāviva.

40. tāpayantau śaraiḥ tīkṣṇaiḥ anyonyaṃ tau mahārathau
yugāntapratimau vīrau rejatuḥ bhāskarau iva

40. tau mahārathau vīrau tīkṣṇaiḥ śaraiḥ anyonyaṃ
tāpayantau yugāntapratimau bhāskarau iva rejatuḥ

40. Those two great charioteers and heroes, tormenting each other with sharp arrows, shone like two suns at the end of an age (yugānta).

Words meanings summery:

• तापयन्तौ (tāpayantau) - tormenting, heating, causing pain

• शरैः (śaraiḥ) - by arrows

• तीक्ष्णैः (tīkṣṇaiḥ) - by sharp (arrows)

• अन्योन्यं (anyonyaṁ) - each other, mutually

• तौ (tau) - those two

• महारथौ (mahārathau) - two great charioteers, two great warriors

• युगान्तप्रतिमौ (yugāntapratimau) - two resembling the end of an age (yugānta)

• वीरौ (vīrau) - two heroes, two brave ones

• रेजतुः (rejatuḥ) - they (two) shone, they (two) appeared

• भास्करौ (bhāskarau) - two suns

• इव (iva) - like, as, as if

Words meanings and morphology

तापयन्तौ (tāpayantau) - tormenting, heating, causing pain

(participle)

Nominative, masculine, dual of tāpayat

tāpayat - one who causes pain, one who heats, tormenting

Present Active Participle (Causative)

Derived from causative root √tap (तप्) 'to heat, torment' + present active participle suffix -at.

Root: tap (class 1)

शरैः (śaraiḥ) - by arrows

(noun)

Instrumental, masculine, plural of śara

śara - arrow, reed

तीक्ष्णैः (tīkṣṇaiḥ) - by sharp (arrows)

(adjective)

Instrumental, masculine, plural of tīkṣṇa

tīkṣṇa - sharp, keen, pungent, hot, intense

अन्योन्यं (anyonyaṁ) - each other, mutually

(pronoun)

Accusative, neuter, singular of anyonya

anyonya - each other, mutual, reciprocal

Note: Used adverbially.

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that, those

महारथौ (mahārathau) - two great charioteers, two great warriors

(noun)

Nominative, masculine, dual of mahāratha

mahāratha - great warrior, great charioteer, a warrior capable of fighting 10,000 archers

Compound type : karmadhāraya (mahā+ratha)

• mahā – great, large, mighty
  adjective
• ratha – chariot, warrior (one who fights from a chariot)
  noun (masculine)

युगान्तप्रतिमौ (yugāntapratimau) - two resembling the end of an age (yugānta)

(adjective)

Nominative, masculine, dual of yugāntapratima

yugāntapratima - resembling the end of a yuga, like the dissolution of the world

Compound type : bahuvrīhi (yugānta+pratima)

• yugānta – end of an age, dissolution of an eon
  noun (masculine)
• pratima – image, likeness, resembling, equal to
  adjective
  Prefix: prati

वीरौ (vīrau) - two heroes, two brave ones

(noun)

Nominative, masculine, dual of vīra

vīra - hero, brave, valiant

रेजतुः (rejatuḥ) - they (two) shone, they (two) appeared

(verb)

3rd person , dual, active, past imperfect (laṅ) of √rāj

Root: rāj (class 1)

भास्करौ (bhāskarau) - two suns

(noun)

Nominative, masculine, dual of bhāskara

bhāskara - sun, light-maker, one who creates light

From bhāsa (light) + kara (maker).

Compound type : upapada (bhāsa+kara)

• bhāsa – light, splendor, lustre
  noun (masculine)
• kara – maker, doer, hand, ray
  noun (masculine)
  Root: kṛ (class 8)

इव (iva) - like, as, as if

(indeclinable)