वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-7, chapter-77, verse-19

ईदृशो ह्यश्वमेधस्य प्रभावो रघुनन्दन ।
यजस्व सुमहाभाग हयमेधेन पार्थिव ॥१९॥

19. īdṛśo hyaśvamedhasya prabhāvo raghunandana ,
yajasva sumahābhāga hayamedhena pārthiva.

19. īdṛśaḥ hi aśvamedhasya prabhāvaḥ raghunandana
| yajasva su mahābhāga hayamedhena pārthiva

19. raghunandana aśvamedhasya īdṛśaḥ hi prabhāvaḥ
su mahābhāga pārthiva hayamedhena yajasva

19. Such, indeed, is the great power of the horse-Vedic ritual (aśvamedha), O scion of Raghu. Therefore, O very fortunate king, perform a horse-Vedic ritual (hayamedha).

Words meanings summery:

• ईदृशः (īdṛśaḥ) - such, of this kind

• हि (hi) - indeed, surely, for

• अश्वमेधस्य (aśvamedhasya) - of the horse-Vedic ritual

• प्रभावः (prabhāvaḥ) - power, influence, glory, dignity

• रघुनन्दन (raghunandana) - O Rāma or another king of Raghu's lineage (O scion of Raghu, O descendant of Raghu)

• यजस्व (yajasva) - perform a Vedic ritual, sacrifice

• सु (su) - very, excellent, well

• महाभाग (mahābhāga) - O very fortunate one (great fortune, highly fortunate)

• हयमेधेन (hayamedhena) - by means of the horse-Vedic ritual

• पार्थिव (pārthiva) - O king, O earthly ruler

Words meanings and morphology

ईदृशः (īdṛśaḥ) - such, of this kind

(adjective)

Nominative, masculine, singular of īdṛśa

īdṛśa - such, of this kind, like this

Formed from pronominal stem idaṃ (this) and suffix dṛśa (like)

हि (hi) - indeed, surely, for

(indeclinable)

अश्वमेधस्य (aśvamedhasya) - of the horse-Vedic ritual

(noun)

Genitive, masculine, singular of aśvamedha

aśvamedha - horse-Vedic ritual, a specific ancient Vedic ritual

Tatpuruṣa compound: aśva (horse) + medha (Vedic ritual/sacrifice)

Compound type : tatpuruṣa (aśva+medha)

• aśva – horse
  noun (masculine)
• medha – Vedic ritual, sacrifice, offering
  noun (masculine)
  Derived from root midh/medh (to be fat, to kill, to sacrifice)
  Root: medh (class 1)

प्रभावः (prabhāvaḥ) - power, influence, glory, dignity

(noun)

Nominative, masculine, singular of prabhāva

prabhāva - power, might, influence, dignity, majesty

Derived from root bhū (to be) with prefix pra (forth, intensely)

Prefix: pra

Root: bhū (class 1)

रघुनन्दन (raghunandana) - O Rāma or another king of Raghu's lineage (O scion of Raghu, O descendant of Raghu)

(proper noun)

Vocative, masculine, singular of raghunandana

raghunandana - descendant of Raghu, son of Raghu (an epithet for kings like Rāma)

Tatpuruṣa compound: Raghu (proper noun) + nandana (son/rejoicer)

Compound type : tatpuruṣa (raghu+nandana)

• raghu – name of a celebrated king, ancestor of Rāma
  proper noun (masculine)
• nandana – son, child, one who causes joy, rejoicer
  noun (masculine)
  Derived from root nand (to rejoice)
  Root: nand (class 1)

यजस्व (yajasva) - perform a Vedic ritual, sacrifice

(verb)

2nd person , singular, middle, imperative (lot) of yaj

Root yaj (class 1)

Root: yaj (class 1)

सु (su) - very, excellent, well

(indeclinable)

Prefix or adverb

Note: First part of the bahuvrīhi compound 'sumahābhāga'

महाभाग (mahābhāga) - O very fortunate one (great fortune, highly fortunate)

(adjective)

Vocative, masculine, singular of mahābhāga

mahābhāga - great fortune, highly fortunate, greatly esteemed

Bahuvrīhi compound: mahā (great) + bhāga (share, fortune)

Compound type : bahuvrīhi (mahā+bhāga)

• mahā – great, large, mighty
  adjective (masculine)
• bhāga – share, portion, fortune, destiny
  noun (masculine)
  Derived from root bhaj (to divide, share)
  Root: bhaj (class 1)

Note: Second part of the compound 'sumahābhāga', here representing the whole compound in vocative case.

हयमेधेन (hayamedhena) - by means of the horse-Vedic ritual

(noun)

Instrumental, masculine, singular of hayamedha

hayamedha - horse-Vedic ritual, a specific ancient Vedic ritual

Tatpuruṣa compound: haya (horse) + medha (Vedic ritual/sacrifice)

Compound type : tatpuruṣa (haya+medha)

• haya – horse
  noun (masculine)
  Derived from root hi (to impel, go)
  Root: hi (class 5)
• medha – Vedic ritual, sacrifice, offering
  noun (masculine)
  Derived from root midh/medh (to be fat, to kill, to sacrifice)
  Root: medh (class 1)

पार्थिव (pārthiva) - O king, O earthly ruler

(noun)

Vocative, masculine, singular of pārthiva

pārthiva - king, earthly ruler, son of the earth

Derived from pṛthivī (earth) with the suffix 'aṇ' to mean 'related to earth' or 'ruler of earth'.