वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-5, chapter-65, verse-27

ताव् उभौ नरशार्दूलौ राजपुत्रावरिंदमौ ।
त्वद्दर्शनकृतोत्साहौ लङ्कां भस्मीकरिष्यतः ॥२७॥

27. tāv ubhau naraśārdūlau rājaputrāvariṃdamau ,
tvaddarśanakṛtotsāhau laṅkāṃ bhasmīkariṣyataḥ.

27. tau ubhau nara-śārdūlau rājaputrau ariṃdamau
tvat-darśana-kṛta-utsāhau laṅkām bhasmīkariṣyataḥ

27. tau ubhau nara-śārdūlau rājaputrau ariṃdamau
tvat-darśana-kṛta-utsāhau laṅkām bhasmīkariṣyataḥ

27. Those two, the best of men, princes who subdue their foes, having gained renewed vigor by seeing you, will reduce Laṅkā to ashes.

Words meanings summery:

• तौ (tau) - those two (Rāma and Lakṣmaṇa) (those two)

• उभौ (ubhau) - both

• नर-शार्दूलौ (nara-śārdūlau) - Rāma and Lakṣmaṇa, who are like tigers among men (i.e., mighty warriors) (two tiger-like men, two best among men)

• राजपुत्रौ (rājaputrau) - Rāma and Lakṣmaṇa, as princes (two princes)

• अरिंदमौ (ariṁdamau) - Rāma and Lakṣmaṇa, as conquerors of enemies (two subduers of foes, two conquerors of enemies)

• त्वत्-दर्शन-कृत-उत्साहौ (tvat-darśana-kṛta-utsāhau) - Rāma and Lakṣmaṇa, whose vigor is renewed by the sight of Sītā (whose enthusiasm is created by seeing you, invigorated by your sight)

• लङ्काम् (laṅkām) - the city of Laṅkā (Laṅkā)

• भस्मीकरिष्यतः (bhasmīkariṣyataḥ) - will reduce to ashes

Words meanings and morphology

तौ (tau) - those two (Rāma and Lakṣmaṇa) (those two)

(pronoun)

Nominative, masculine, dual of tad

tad - that, those (demonstrative pronoun)

Masculine nominative dual of tad.

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

Masculine nominative dual.

नर-शार्दूलौ (nara-śārdūlau) - Rāma and Lakṣmaṇa, who are like tigers among men (i.e., mighty warriors) (two tiger-like men, two best among men)

(noun)

Nominative, masculine, dual of nara-śārdūla

nara-śārdūla - man-tiger, a tiger among men, an eminent man, best of men

Compound type : tatpurusha (nara+śārdūla)

• nara – man, human being
  noun (masculine)
  Root: nṛ
• śārdūla – tiger
  noun (masculine)

राजपुत्रौ (rājaputrau) - Rāma and Lakṣmaṇa, as princes (two princes)

(noun)

Nominative, masculine, dual of rājaputra

rājaputra - son of a king, prince

Compound type : tatpurusha (rājan+putra)

• rājan – king
  noun (masculine)
  Root: rāj (class 1)
• putra – son
  noun (masculine)

अरिंदमौ (ariṁdamau) - Rāma and Lakṣmaṇa, as conquerors of enemies (two subduers of foes, two conquerors of enemies)

(adjective)

Nominative, masculine, dual of ariṃdama

ariṁdama - subduer of enemies, conqueror of foes

Derived from ari (enemy) + dam (to subdue).

Compound type : upapada tatpurusha (ari+dama)

• ari – enemy, foe
  noun (masculine)
  Root: ṛ (class 3)
• dama – subduing, taming
  noun (masculine)
  From root dam
  Root: dam (class 1)

Note: Adjective modifying Rāma and Lakṣmaṇa.

त्वत्-दर्शन-कृत-उत्साहौ (tvat-darśana-kṛta-utsāhau) - Rāma and Lakṣmaṇa, whose vigor is renewed by the sight of Sītā (whose enthusiasm is created by seeing you, invigorated by your sight)

(adjective)

Nominative, masculine, dual of tvat-darśana-kṛta-utsāha

tvat-darśana-kṛta-utsāha - having enthusiasm created by your sight

Bahuvrihi compound.

Compound type : bahuvrihi (tvat+darśana+kṛta+utsāha)

• tvat – your (stem for compound)
  pronoun
  Second person pronoun, stem
• darśana – seeing, sight, vision
  noun (neuter)
  Agent noun / Action noun
  From root dṛś
  Root: dṛś (class 1)
• kṛta – made, done, caused
  adjective (neuter)
  Past Passive Participle
  From root kṛ
  Root: kṛ (class 8)
• utsāha – energy, enthusiasm, vigor
  noun (masculine)
  Prefix: ut
  Root: sah (class 1)

Note: Adjective modifying Rāma and Lakṣmaṇa.

लङ्काम् (laṅkām) - the city of Laṅkā (Laṅkā)

(proper noun)

Accusative, feminine, singular of laṅkā

laṅkā - Laṅkā (proper noun, name of the city)

Note: Object of 'bhasmīkariṣyataḥ'.

भस्मीकरिष्यतः (bhasmīkariṣyataḥ) - will reduce to ashes

(verb)

3rd person , dual, active, future indicative (lṛṭ) of bhasmīkṛ

Future Tense

Formed from bhasman (ashes) + kṛ (to do, make) + ī (for intensifier). Future dual.

Root: kṛ (class 8)

Note: Active voice, dual form for 'tau'.