महाभारतः mahābhārataḥ - book-1, chapter-213, verse-51

पाण्डुसागरमाविद्धः प्रविवेश महानदः ।
पूर्णमापूरयंस्तेषां द्विषच्छोकावहोऽभवत् ॥५१॥

51. pāṇḍusāgaramāviddhaḥ praviveśa mahānadaḥ ,
pūrṇamāpūrayaṁsteṣāṁ dviṣacchokāvaho'bhavat.

51. pāṇḍusāgaram āviddhaḥ praviveśa mahānadaḥ
pūrṇam āpūrayan teṣām dviṣacchokāvahaḥ abhavat

51. The great river (of gifts), flowing into the ocean of the Pāṇḍavas, completely filled it. Thus, it became a cause of sorrow for their enemies.

Words meanings summery:

• पाण्डुसागरम् (pāṇḍusāgaram) - into the ocean of the Pāṇḍavas (the ocean of the Pāṇḍavas)

• आविद्धः (āviddhaḥ) - poured into (poured into, struck, discharged)

• प्रविवेश (praviveśa) - entered (entered, went into)

• महानदः (mahānadaḥ) - the great river (of gifts) (great river)

• पूर्णम् (pūrṇam) - completely, fully (full, complete, entirely)

• आपूरयन् (āpūrayan) - filling (it) (filling, causing to be full)

• तेषाम् (teṣām) - their (enemies) (their, of them)

• द्विषच्छोकावहः (dviṣacchokāvahaḥ) - a bringer of sorrow to their enemies (bringing sorrow to enemies)

• अभवत् (abhavat) - became (became, was)

Words meanings and morphology

पाण्डुसागरम् (pāṇḍusāgaram) - into the ocean of the Pāṇḍavas (the ocean of the Pāṇḍavas)

(noun)

Accusative, masculine, singular of pāṇḍusāgara

pāṇḍusāgara - the ocean of the Pāṇḍavas

Compound type : tatpurusha (pāṇḍu+sāgara)

• pāṇḍu – Pāṇḍu (father of the Pāṇḍavas), pale, yellow-white
  proper noun (masculine)
• sāgara – ocean, sea
  noun (masculine)

Note: The Pāṇḍavas are metaphorically an ocean due to their vastness or receiving capacity.

आविद्धः (āviddhaḥ) - poured into (poured into, struck, discharged)

(adjective)

Nominative, masculine, singular of āviddha

āviddha - poured into, struck, pierced, thrown

Past Passive Participle

From ā-√vyadh (to pierce, to hit, to throw)

Prefix: ā

Root: vyadh (class 4)

Note: Modifies mahānadaḥ.

प्रविवेश (praviveśa) - entered (entered, went into)

(verb)

3rd person , singular, active, perfect (lit) of pra-viś

Prefix: pra

Root: viś (class 6)

महानदः (mahānadaḥ) - the great river (of gifts) (great river)

(noun)

Nominative, masculine, singular of mahānada

mahānada - great river

Compound type : karmadhāraya (mahā+nada)

• mahā – great, large
  adjective (feminine)
• nada – river (masculine)
  noun (masculine)

Note: The subject of praviveśa.

पूर्णम् (pūrṇam) - completely, fully (full, complete, entirely)

(adjective)

Accusative, neuter, singular of pūrṇa

pūrṇa - full, complete, filled, satisfied

Past Passive Participle

From √pṛ (to fill)

Root: pṛ (class 9)

Note: Accusative singular neuter, acting adverbially or as direct object of āpūrayan (filling what is full).

आपूरयन् (āpūrayan) - filling (it) (filling, causing to be full)

(adjective)

Nominative, masculine, singular of āpūrayat

āpūrayat - filling, causing to be full

Present Active Participle (Causative)

From ā-√pṛ (causative root pūri)

Prefix: ā

Root: pṛ (class 9)

Note: Modifies mahānadaḥ.

तेषाम् (teṣām) - their (enemies) (their, of them)

(pronoun)

Genitive, masculine, plural of tad

tad - that, he, she, it

Note: Refers to the Pāṇḍavas.

द्विषच्छोकावहः (dviṣacchokāvahaḥ) - a bringer of sorrow to their enemies (bringing sorrow to enemies)

(adjective)

Nominative, masculine, singular of dviṣacchokāvaha

dviṣacchokāvaha - bringing sorrow to enemies

Compound type : tatpurusha (dviṣat+śoka+āvaha)

• dviṣat – enemy, hating
  adjective (masculine)
  Present Active Participle
  From √dviṣ
  Root: dviṣ (class 2)
• śoka – sorrow, grief, lamentation
  noun (masculine)
  Root: śuc (class 1)
• āvaha – bringing, causing, producing
  adjective (masculine)
  agent noun/suffix -a
  From ā-√vah
  Prefix: ā
  Root: vah (class 1)

Note: Predicate adjective to the implicit subject of abhavat (it became).

अभवत् (abhavat) - became (became, was)

(verb)

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

Root: bhū (class 1)