महाभारतः mahābhārataḥ - book-3, chapter-39, verse-19

मनोहरवनोपेतास्तस्मिन्नतिरथोऽर्जुनः ।
पुण्यशीतामलजलाः पश्यन्प्रीतमनाभवत् ॥१९॥

19. manoharavanopetāstasminnatiratho'rjunaḥ ,
puṇyaśītāmalajalāḥ paśyanprītamanābhavat.

19. manoharavanopetāḥ tasmin atirathaḥ arjunaḥ
puṇyaśītāmalajalāḥ paśyan prītamanāḥ abhavat

19. In that region, endowed with charming forests and having sacred, cool, clear waters, Arjuna, the great warrior, became pleased in mind upon seeing them.

Words meanings summery:

• मनोहरवनोपेताः (manoharavanopetāḥ) - referring to the region or surroundings Arjuna was in (endowed with charming forests)

• तस्मिन् (tasmin) - in that place or region (in that)

• अतिरथः (atirathaḥ) - a great warrior

• अर्जुनः (arjunaḥ) - Arjuna

• पुण्यशीतामलजलाः (puṇyaśītāmalajalāḥ) - referring to the streams or bodies of water in the region (having sacred, cool, clear waters)

• पश्यन् (paśyan) - seeing, beholding

• प्रीतमनाः (prītamanāḥ) - pleased in mind, joyful

• अभवत् (abhavat) - became

Words meanings and morphology

मनोहरवनोपेताः (manoharavanopetāḥ) - referring to the region or surroundings Arjuna was in (endowed with charming forests)

(adjective)

Nominative, masculine, plural of manoharavanopeta

manoharavanopeta - endowed with beautiful forests

Compound type : bahuvrihi (manohara+vana+upeta)

• manohara – charming, captivating
  adjective (masculine)
• vana – forest, wood
  noun (neuter)
• upeta – endowed with, furnished with, approached, reached
  adjective (masculine)
  Past Passive Participle
  Prefix: upa
  Root: i (class 2)

तस्मिन् (tasmin) - in that place or region (in that)

(pronoun)

Locative, masculine, singular of tad

tad - that

अतिरथः (atirathaḥ) - a great warrior

(noun)

Nominative, masculine, singular of atiratha

atiratha - a great warrior, one who can fight many warriors single-handedly

Compound type : tatpurusha (ati+ratha)

• ati – very, exceedingly
  indeclinable
• ratha – chariot, warrior
  noun (masculine)

अर्जुनः (arjunaḥ) - Arjuna

(proper noun)

Nominative, masculine, singular of arjuna

arjuna - Arjuna (name of a Pāṇḍava prince)

पुण्यशीतामलजलाः (puṇyaśītāmalajalāḥ) - referring to the streams or bodies of water in the region (having sacred, cool, clear waters)

(adjective)

Nominative, masculine, plural of puṇyaśītāmalajala

puṇyaśītāmalajala - having sacred, cool, pure waters

Compound type : bahuvrihi (puṇya+śīta+amala+jala)

• puṇya – sacred, meritorious, pure
  adjective (neuter)
• śīta – cool, cold
  adjective (neuter)
• amala – pure, clear, spotless
  adjective (masculine)
• jala – water
  noun (neuter)

पश्यन् (paśyan) - seeing, beholding

(adjective)

Nominative, masculine, singular of paśyat

paśyat - seeing

Present Active Participle

Root: dṛś (class 1)

प्रीतमनाः (prītamanāḥ) - pleased in mind, joyful

(adjective)

Nominative, masculine, singular of prītamanas

prītamanas - pleased in mind, glad

Compound type : bahuvrihi (prīta+manas)

• prīta – pleased, delighted
  adjective (masculine)
  Past Passive Participle
  Root: prī (class 9)
• manas – mind, intellect
  noun (neuter)

अभवत् (abhavat) - became

(verb)

3rd person , singular, active, past imperfect (laṅ) of bhū

Root: bhū (class 1)