महाभारतः mahābhārataḥ - book-3, chapter-83, verse-18

तत्र देवह्रदे स्नात्वा शुचिः प्रयतमानसः ।
अश्वमेधमवाप्नोति परां सिद्धिं च गच्छति ॥१८॥

18. tatra devahrade snātvā śuciḥ prayatamānasaḥ ,
aśvamedhamavāpnoti parāṁ siddhiṁ ca gacchati.

18. tatra devahrade snātvā śuciḥ prayatamānasaḥ
aśvamedham avāpnoti parām siddhim ca gacchati

18. tatra śuciḥ prayatamānasaḥ devahrade snātvā
aśvamedham avāpnoti ca parām siddhim gacchati

18. There, a person who is pure and has a restrained mind, having bathed in the divine lake, obtains the merit of a horse-Vedic ritual (aśvamedha) and attains supreme accomplishment (siddhi).

Words meanings summery:

• तत्र (tatra) - there (there, in that place)

• देवह्रदे (devahrade) - in the divine lake

• स्नात्वा (snātvā) - having bathed

• शुचिः (śuciḥ) - pure (pure, clean)

• प्रयततमानसः (prayatatamānasaḥ) - with a restrained mind (with a restrained mind, with a controlled mind)

• अश्वमेधम् (aśvamedham) - the merit of a horse-Vedic ritual (aśvamedha) (the horse-Vedic ritual)

• अवाप्नोति (avāpnoti) - obtains (he obtains, he attains)

• पराम् (parām) - supreme (supreme, highest, ultimate)

• सिद्धिम् (siddhim) - accomplishment (siddhi) (attainment, accomplishment, perfection, success, psychic power)

• च (ca) - and (and, also)

• गच्छति (gacchati) - attains (he goes, he reaches)

Words meanings and morphology

तत्र (tatra) - there (there, in that place)

(indeclinable)

locative of tad (that)

देवह्रदे (devahrade) - in the divine lake

(noun)

Locative, masculine, singular of devahrada

devahrada - divine lake, sacred pool

compound of deva (divine, god) + hrada (lake, pool)

Compound type : tatpuruṣa (deva+hrada)

• deva – god, divine, celestial
  noun (masculine)
• hrada – lake, pool, deep part of a river
  noun (masculine)

स्नात्वा (snātvā) - having bathed

(indeclinable)

absolutive

from root √snā (to bathe)

Root: √snā (class 2)

शुचिः (śuciḥ) - pure (pure, clean)

(adjective)

Nominative, masculine, singular of śuci

śuci - pure, clean, bright

Note: modifies an implied subject like 'naraḥ'

प्रयततमानसः (prayatatamānasaḥ) - with a restrained mind (with a restrained mind, with a controlled mind)

(adjective)

Nominative, masculine, singular of prayatatamānasa

prayatatamānasa - whose mind is restrained, with a controlled mind

bahuvrīhi compound of prayata (restrained) + mānasa (mind)

Compound type : bahuvrīhi (prayatata+mānasa)

• prayatata – restrained, controlled, disciplined
  adjective (masculine)
  past passive participle
  from root √yat (to strive, control) with prefix pra
  Prefix: pra
  Root: √yat (class 1)
• mānasa – mind, mental
  noun (neuter)
  derived from manas (mind)

Note: modifies an implied subject like 'naraḥ'

अश्वमेधम् (aśvamedham) - the merit of a horse-Vedic ritual (aśvamedha) (the horse-Vedic ritual)

(noun)

Accusative, masculine, singular of aśvamedha

aśvamedha - horse-Vedic ritual, a specific type of Vedic ritual (yajña) for imperial sovereignty

compound of aśva (horse) + medha (Vedic ritual, sacrifice)

Compound type : tatpuruṣa (aśva+medha)

• aśva – horse
  noun (masculine)
• medha – Vedic ritual, sacrifice, oblation
  noun (masculine)
  from root √medh (to be fat, prosper)
  Root: √medh

अवाप्नोति (avāpnoti) - obtains (he obtains, he attains)

(verb)

3rd person , singular, active, present (laṭ) of √āp

present tense, 3rd person singular

from root √āp (to obtain) with prefix ava

Prefix: ava

Root: √āp (class 5)

पराम् (parām) - supreme (supreme, highest, ultimate)

(adjective)

Accusative, feminine, singular of para

para - supreme, highest, ultimate, other

Note: modifies siddhim

सिद्धिम् (siddhim) - accomplishment (siddhi) (attainment, accomplishment, perfection, success, psychic power)

(noun)

Accusative, feminine, singular of siddhi

siddhi - attainment, accomplishment, perfection, success, psychic power, liberation

from root √sidh (to succeed, accomplish)

Root: √sidh

च (ca) - and (and, also)

(indeclinable)

गच्छति (gacchati) - attains (he goes, he reaches)

(verb)

3rd person , singular, active, present (laṭ) of √gam

present tense, 3rd person singular

from root √gam (to go)

Root: √gam (class 1)