महाभारतः mahābhārataḥ - book-9, chapter-34, verse-80

उदपानमथागच्छत्त्वरावान्केशवाग्रजः ।
आद्यं स्वस्त्ययनं चैव तत्रावाप्य महत्फलम् ॥८०॥

80. udapānamathāgacchattvarāvānkeśavāgrajaḥ ,
ādyaṁ svastyayanaṁ caiva tatrāvāpya mahatphalam.

80. udapānam atha agacchat tvarāvān keśavāgrajaḥ ādyam
svastyayanam ca eva tatra avāpya mahat phalam

80. atha tvarāvān keśavāgrajaḥ udapānam agacchat tatra
mahat phalam ca eva ādyam svastyayanam avāpya

80. Then, the elder brother of Keśava (Balarāma), being swift, went to the well. There, having obtained a great fruit (phalam) and the foremost blessing (svastyayana)...

Words meanings summery:

• उदपानम् (udapānam) - a well, a pond

• अथ (atha) - then, now, thereupon

• अगच्छत् (agacchat) - he went, he approached

• त्वरावान् (tvarāvān) - swift, quick, agile

• केशवाग्रजः (keśavāgrajaḥ) - the elder brother of Keśava (Krishna), i.e., Balarāma

• आद्यम् (ādyam) - first, primary, original

• स्वस्त्ययनम् (svastyayanam) - blessing, auspicious ceremony, welfare

• च (ca) - and, also

• एव (eva) - indeed, only, certainly

• तत्र (tatra) - there, in that place

• अवाप्य (avāpya) - having obtained, having achieved

• महत् (mahat) - great, large, important

• फलम् (phalam) - fruit, result, reward, consequence

Words meanings and morphology

उदपानम् (udapānam) - a well, a pond

(noun)

Accusative, neuter, singular of udapāna

udapāna - a well, a pond

Compound type : tatpuruṣa (uda+pāna)

• uda – water
  noun (neuter)
• pāna – drinking, a drink
  noun (neuter)
  Root: pā (class 1)

अथ (atha) - then, now, thereupon

(indeclinable)

अगच्छत् (agacchat) - he went, he approached

(verb)

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

Root: gam (class 1)

त्वरावान् (tvarāvān) - swift, quick, agile

(adjective)

Nominative, masculine, singular of tvarāvat

tvarāvat - swift, quick, agile

Possessive suffix -vat

केशवाग्रजः (keśavāgrajaḥ) - the elder brother of Keśava (Krishna), i.e., Balarāma

(proper noun)

Nominative, masculine, singular of keśavāgraja

keśavāgraja - the elder brother of Keśava (Krishna), i.e., Balarāma

Compound type : tatpuruṣa (keśava+agraja)

• keśava – Keśava, Krishna
  proper noun (masculine)
• agraja – elder brother, born first
  noun (masculine)
  Root: jan (class 4)

आद्यम् (ādyam) - first, primary, original

(adjective)

Accusative, neuter, singular of ādya

ādya - first, primary, original

स्वस्त्ययनम् (svastyayanam) - blessing, auspicious ceremony, welfare

(noun)

Accusative, neuter, singular of svastyayana

svastyayana - blessing, auspicious ceremony, welfare

Compound type : tatpuruṣa (svasti+ayana)

• svasti – welfare, well-being, blessing
  indeclinable
• ayana – going, path, course
  noun (neuter)
  Root: i (class 2)

च (ca) - and, also

(indeclinable)

एव (eva) - indeed, only, certainly

(indeclinable)

तत्र (tatra) - there, in that place

(indeclinable)

अवाप्य (avāpya) - having obtained, having achieved

(indeclinable)

absolutive

formed from ava-āp with -ya suffix

Prefix: ava

Root: āp (class 5)

महत् (mahat) - great, large, important

(adjective)

Accusative, neuter, singular of mahat

mahat - great, large, important

फलम् (phalam) - fruit, result, reward, consequence

(noun)

Accusative, neuter, singular of phala

phala - fruit, result, reward, consequence