महाभारतः mahābhārataḥ - book-3, chapter-87, verse-7

ह्रदिनी पुण्यतीर्था च राजर्षेस्तत्र वै सरित् ।
विश्वामित्रनदी पारा पुण्या परपुरंजय ॥७॥

7. hradinī puṇyatīrthā ca rājarṣestatra vai sarit ,
viśvāmitranadī pārā puṇyā parapuraṁjaya.

7. hradīnī puṇyatīrthā ca rājarṣeḥ tatra vai
sarit viśvāmitranadī pārā puṇyā parapuranjaya

7. O conqueror of enemy cities, there indeed flows a river belonging to the royal sage (rājarṣeḥ) which is full of pools and has sacred bathing places (puṇyatīrthā). It is the Pārā river, also known as the Viśvāmitra river, and it is sacred.

Words meanings summery:

• ह्रदीनी (hradīnī) - a river (full of pools)

• पुण्यतीर्था (puṇyatīrthā) - having sacred fords/bathing places

• च (ca) - and, also

• राजर्षेः (rājarṣeḥ) - of the royal sage

• तत्र (tatra) - there, in that place

• वै (vai) - indeed, certainly (emphatic particle)

• सरित् (sarit) - river, stream

• विश्वामित्रनदी (viśvāmitranadī) - The river named after the sage Viśvāmitra. (the river of Viśvāmitra)

• पारा (pārā) - The Pārā river. (Pārā (name of a river))

• पुण्या (puṇyā) - sacred, holy, meritorious

• परपुरन्जय (parapuranjaya) - Addressing Rama or Lakshmana. (O conqueror of enemy cities)

Words meanings and morphology

ह्रदीनी (hradīnī) - a river (full of pools)

(noun)

Nominative, feminine, singular of hradinī

hradinī - river, stream (from 'hrada' - a lake/pool, so 'one possessing pools')

Feminine form of 'hradin', "having pools".

पुण्यतीर्था (puṇyatīrthā) - having sacred fords/bathing places

(adjective)

Nominative, feminine, singular of puṇyatīrtha

puṇyatīrtha - having sacred fords or pilgrimage places

Feminine form.

Compound type : bahuvrīhi (puṇya+tīrtha)

• puṇya – sacred, holy, meritorious
  adjective
• tīrtha – ford, bathing place, sacred place of pilgrimage
  noun (neuter)

Note: Agrees with 'hradīnī' and 'sarit'.

च (ca) - and, also

(indeclinable)

राजर्षेः (rājarṣeḥ) - of the royal sage

(noun)

Genitive, masculine, singular of rājarṣi

rājarṣi - royal sage (a king who is also a sage)

Compound type : karmadhāraya (rājan+ṛṣi)

• rājan – king
  noun (masculine)
• ṛṣi – sage, seer
  noun (masculine)

तत्र (tatra) - there, in that place

(indeclinable)

Formed from 'tad' (that) + 'trā' (locative suffix).

वै (vai) - indeed, certainly (emphatic particle)

(indeclinable)

सरित् (sarit) - river, stream

(noun)

Nominative, feminine, singular of sarit

sarit - river, stream

From root 'sṛ' (to flow).

Root: sṛ (class 1)

विश्वामित्रनदी (viśvāmitranadī) - The river named after the sage Viśvāmitra. (the river of Viśvāmitra)

(proper noun)

Nominative, feminine, singular of viśvāmitranadī

viśvāmitranadī - the river of Viśvāmitra

Compound type : tatpuruṣa (viśvāmitra+nadī)

• viśvāmitra – Viśvāmitra (a celebrated royal sage)
  proper noun (masculine)
• nadī – river
  noun (feminine)

पारा (pārā) - The Pārā river. (Pārā (name of a river))

(proper noun)

Nominative, feminine, singular of pārā

pārā - Pārā (name of a river)

पुण्या (puṇyā) - sacred, holy, meritorious

(adjective)

Nominative, feminine, singular of puṇya

puṇya - sacred, holy, virtuous, meritorious; merit, virtue

Feminine form.

Note: Agrees with 'nadī' implied with Pārā.

परपुरन्जय (parapuranjaya) - Addressing Rama or Lakshmana. (O conqueror of enemy cities)

(noun)

Vocative, masculine, singular of parapuranjaya

parapuranjaya - conqueror of enemy cities

Compound type : upapada tatpuruṣa (para+pura+jaya)

• para – other, enemy, supreme
  adjective
• pura – city, fortress
  noun (neuter)
• jaya – victory, conquering, conqueror
  noun (masculine)
  Suffix 'ac' from root 'ji' (to conquer).
  Root: ji (class 1)

Note: Used as an epithet for a prince/hero.