वाल्मीकि-रामायणम् vālmīki-rāmāyaṇam - book-6, chapter-116, verse-82

राज्यं दशसहस्राणि प्राप्य वर्षाणि राघवः ।
शताश्वमेधानाजह्रे सदश्वान्भूरिदक्षिणान् ॥८२॥

82. rājyaṃ daśasahasrāṇi prāpya varṣāṇi rāghavaḥ ,
śatāśvamedhānājahre sadaśvānbhūridakṣiṇān.

82. rājyaṃ daśasahasrāṇi prāpya varṣāṇi rāghavaḥ
śatāśvamedhān ājahre sadaśvān bhūridakṣiṇān

82. rāghavaḥ daśasahasrāṇi varṣāṇi rājyaṃ prāpya
śatāśvamedhān sadaśvān bhūridakṣiṇān ājahre

82. After ruling the kingdom for ten thousand years, Rāghava (Rāma) performed a hundred Aśvamedha (Vedic rituals) that involved excellent horses and generous donations.

Words meanings summery:

• राज्यं (rājyaṁ) - kingdom, sovereignty

• दशसहस्राणि (daśasahasrāṇi) - ten thousand

• प्राप्य (prāpya) - having ruled (having obtained, having reached)

• वर्षाणि (varṣāṇi) - years

• राघवः (rāghavaḥ) - Rāma (Rāghava (descendant of Raghu, referring to Rāma))

• शताश्वमेधान् (śatāśvamedhān) - a hundred Aśvamedha (Vedic rituals)

• आजह्रे (ājahre) - he performed, he carried out

• सदश्वान् (sadaśvān) - with excellent horses

• भूरिदक्षिणान् (bhūridakṣiṇān) - with ample gifts, having numerous fees/donations

Words meanings and morphology

राज्यं (rājyaṁ) - kingdom, sovereignty

(noun)

Accusative, neuter, singular of rājya

rājya - kingdom, empire, rule, sovereignty

दशसहस्राणि (daśasahasrāṇi) - ten thousand

(numeral)

Compound type : tatpuruṣa (daśa+sahasra)

• daśa – ten
  numeral (neuter)
• sahasra – thousand
  numeral (neuter)

प्राप्य (prāpya) - having ruled (having obtained, having reached)

(indeclinable)

absolutive (gerund)

root āp with prefix pra

Prefix: pra

Root: āp (class 5)

वर्षाणि (varṣāṇi) - years

(noun)

Accusative, neuter, plural of varṣa

varṣa - year, rain, rainy season

राघवः (rāghavaḥ) - Rāma (Rāghava (descendant of Raghu, referring to Rāma))

(proper noun)

Nominative, masculine, singular of rāghava

rāghava - descendant of Raghu, name of Rāma

patronymic from Raghu

शताश्वमेधान् (śatāśvamedhān) - a hundred Aśvamedha (Vedic rituals)

(noun)

Accusative, masculine, plural of śatāśvamedha

śatāśvamedha - a hundred Aśvamedha rituals

Compound type : tatpuruṣa (śata+aśvamedha)

• śata – hundred
  numeral (neuter)
• aśvamedha – horse-ritual, a type of major Vedic ritual
  noun (masculine)

आजह्रे (ājahre) - he performed, he carried out

(verb)

3rd person , singular, middle, perfect (liṭ) of āhṛ

perfect 3rd person singular middle (ātmanepada)

Prefix: ā

Root: hṛ (class 1)

सदश्वान् (sadaśvān) - with excellent horses

(adjective)

Accusative, masculine, plural of sadaśva

sadaśva - having good horses, excellent horses

Compound type : bahuvrīhi (sat+aśva)

• sat – good, true, excellent
  adjective (masculine)
  Present Active Participle
  from root as (to be)
  Root: as (class 2)
• aśva – horse
  noun (masculine)

भूरिदक्षिणान् (bhūridakṣiṇān) - with ample gifts, having numerous fees/donations

(adjective)

Accusative, masculine, plural of bhūridakṣiṇa

bhūridakṣiṇa - having abundant fees or gifts

Compound type : bahuvrīhi (bhūri+dakṣiṇā)

• bhūri – much, abundant, many
  adjective (neuter)
• dakṣiṇā – gift, donation, sacrificial fee
  noun (feminine)

Note: Modifies 'śatāśvamedhān' (the rituals themselves are characterized by ample gifts)