महाभारतः mahābhārataḥ - book-3, chapter-82, verse-39

यमुनाप्रभवं गत्वा उपस्पृश्य च यामुने ।
अश्वमेधफलं लब्ध्वा स्वर्गलोके महीयते ॥३९॥

39. yamunāprabhavaṁ gatvā upaspṛśya ca yāmune ,
aśvamedhaphalaṁ labdhvā svargaloke mahīyate.

39. yamunāprabhavaṃ gatvā upaspṛśya ca yāmune
aśvamedhaphalaṃ labdhvā svargaloke mahīyate

39. Having gone to the source of the Yamuna, and having bathed in the Yamuna, one obtains the fruit of the horse sacrifice (aśvamedha) and is glorified in the heavenly realm.

Words meanings summery:

• यमुनाप्रभवं (yamunāprabhavaṁ) - to the source of the Yamuna

• गत्वा (gatvā) - having gone

• उपस्पृश्य (upaspṛśya) - having touched, having bathed

• च (ca) - and, also

• यामुने (yāmune) - Refers to the waters of the Yamuna. (in the Yamuna (river))

• अश्वमेधफलं (aśvamedhaphalaṁ) - the fruit/result of the horse sacrifice (aśvamedha)

• लब्ध्वा (labdhvā) - having obtained, having gained

• स्वर्गलोके (svargaloke) - in the heavenly realm

• महीयते (mahīyate) - is glorified, is honored, becomes great

Words meanings and morphology

यमुनाप्रभवं (yamunāprabhavaṁ) - to the source of the Yamuna

(noun)

Accusative, masculine, singular of yamunāprabhava

yamunāprabhava - the source or origin of the Yamuna river

Compound type : tatpurusha (yamunā+prabhava)

• yamunā – the Yamuna river
  proper noun (feminine)
• prabhava – source, origin, birth
  noun (masculine)
  Prefix: pra
  Root: bhū (class 1)

गत्वा (gatvā) - having gone

(indeclinable)

Absolutive/Gerund

formed from root gam with suffix -tvā

Root: gam (class 1)

उपस्पृश्य (upaspṛśya) - having touched, having bathed

(indeclinable)

Absolutive/Gerund

formed from root spṛś with prefix upa and suffix -ya

Prefix: upa

Root: spṛś (class 6)

च (ca) - and, also

(indeclinable)

यामुने (yāmune) - Refers to the waters of the Yamuna. (in the Yamuna (river))

(adjective)

Locative, masculine, singular of yāmuna

yāmuna - relating to the Yamuna, the Yamuna river

derived from Yamunā

अश्वमेधफलं (aśvamedhaphalaṁ) - the fruit/result of the horse sacrifice (aśvamedha)

(noun)

Accusative, neuter, singular of aśvamedhaphala

aśvamedhaphala - the fruit, reward, or result of the horse sacrifice (aśvamedha)

Compound type : tatpurusha (aśvamedha+phala)

• aśvamedha – the horse sacrifice (aśvamedha), a Vedic ritual
  noun (masculine)
• phala – fruit, result, reward, consequence
  noun (neuter)

लब्ध्वा (labdhvā) - having obtained, having gained

(indeclinable)

Absolutive/Gerund

formed from root labh with suffix -tvā

Root: labh (class 1)

स्वर्गलोके (svargaloke) - in the heavenly realm

(noun)

Locative, masculine, singular of svargaloka

svargaloka - the heavenly realm, world of svarga (heaven)

Compound type : tatpurusha (svarga+loka)

• svarga – heaven, paradise
  noun (masculine)
• loka – world, realm, people, division of the universe
  noun (masculine)
  Root: lok (class 10)

महीयते (mahīyate) - is glorified, is honored, becomes great

(verb)

3rd person , singular, middle/passive, present (laṭ) of mahī

present tense, 3rd person singular, passive/middle (denominative from mahat via mahīy)

derived from root mah, denominative verb from mahat, passive/ātmanepada form

Root: mah (class 1)