महाभारतः mahābhārataḥ - book-12, chapter-302, verse-4

केवलेनेह पुण्येन गतिमूर्ध्वामवाप्नुयात् ।
पुण्यपापेन मानुष्यमधर्मेणाप्यधोगतिम् ॥४॥

4. kevaleneha puṇyena gatimūrdhvāmavāpnuyāt ,
puṇyapāpena mānuṣyamadharmeṇāpyadhogatim.

4. kevalena iha puṇyena gatim ūrdhvām avāpnuyāt
puṇyapāpena mānuṣyam adharmeṇa api adhogatim

4. इह केवलेण पुण्येन ऊर्ध्वाम् गतिम् अव आप्नुयात् पुण्यपापेन मानुष्यम्,
अधर्मेण अपि अधोगतिम् (अवाप्नुयात्)।

4. By righteousness (puṇya) alone, one attains a higher destination (gati) in this world. By a mixture of righteousness (puṇya) and unrighteousness (pāpa), one attains human birth, and by unrighteousness (adharma) alone, one certainly reaches a lower state (gati).

Words meanings summery:

• केवलेन (kevalena) - by righteousness (puṇya) alone (by alone, by exclusively, by only)

• इह (iha) - in this life or existence (here, in this world, now)

• पुण्येन (puṇyena) - by righteous actions or merit (puṇya) (by righteousness, by virtue, by merit)

• गतिम् (gatim) - a destination or state of being (destination, path, movement, state)

• ऊर्ध्वाम् (ūrdhvām) - a higher (destination) (upward, higher, elevated)

• अवाप्नुयात् (avāpnuyāt) - one attains (a destination) (may attain, should attain, one attains)

• पुण्यपापेन (puṇyapāpena) - by a mix of good and bad actions (puṇya-pāpa) (by righteousness and unrighteousness, by merit and demerit)

• मानुष्यम् (mānuṣyam) - human birth (state of being human) (humanity, human condition, human birth)

• अधर्मेण (adharmeṇa) - by actions contrary to natural law (adharma) (by unrighteousness, by injustice, by wrong conduct)

• अपि (api) - certainly, indeed (also, even, indeed, certainly)

• अधोगतिम् (adhogatim) - a lower destination or state of being (gati) (lower state, downward path, descent)

Words meanings and morphology

केवलेन (kevalena) - by righteousness (puṇya) alone (by alone, by exclusively, by only)

(adjective)

Instrumental, neuter, singular of kevala

kevala - sole, unique, exclusive, mere, whole, pure

Note: Agrees with 'puṇyena'

इह (iha) - in this life or existence (here, in this world, now)

(indeclinable)

पुण्येन (puṇyena) - by righteous actions or merit (puṇya) (by righteousness, by virtue, by merit)

(noun)

Instrumental, neuter, singular of puṇya

puṇya - merit, virtue, righteousness, good deed, holy

गतिम् (gatim) - a destination or state of being (destination, path, movement, state)

(noun)

Accusative, feminine, singular of gati

gati - going, motion, path, course, destination, state, condition

from root gam (to go)

Root: gam (class 1)

ऊर्ध्वाम् (ūrdhvām) - a higher (destination) (upward, higher, elevated)

(adjective)

Accusative, feminine, singular of ūrdhvā

ūrdhva - upward, elevated, high, upper

Note: Agrees with 'gatim'

अवाप्नुयात् (avāpnuyāt) - one attains (a destination) (may attain, should attain, one attains)

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of avāpnu

Optative Active

Root āp (to obtain) with prefix ava

Prefix: ava

Root: āp (class 5)

पुण्यपापेन (puṇyapāpena) - by a mix of good and bad actions (puṇya-pāpa) (by righteousness and unrighteousness, by merit and demerit)

(noun)

Instrumental, neuter, singular of puṇyapāpa

puṇyapāpa - merit and demerit, virtue and vice, good and evil

Dvanda compound of puṇya (merit) and pāpa (demerit)

Compound type : dvandva (puṇya+pāpa)

• puṇya – merit, virtue, righteousness, good deed, holy
  noun (neuter)
• pāpa – sin, evil, demerit, vice, wicked
  noun (neuter)

मानुष्यम् (mānuṣyam) - human birth (state of being human) (humanity, human condition, human birth)

(noun)

Accusative, neuter, singular of mānuṣya

mānuṣya - humanity, human state, human nature, human birth

from manuṣya (human)

अधर्मेण (adharmeṇa) - by actions contrary to natural law (adharma) (by unrighteousness, by injustice, by wrong conduct)

(noun)

Instrumental, masculine, singular of adharma

adharma - unrighteousness, injustice, wrong, vice, impiety, not dharma

Negative compound of a (not) and dharma (natural law/righteousness)

Compound type : nañ-tatpuruṣa (a+dharma)

• a – not, non-, un-
  indeclinable
  Negative particle
• dharma – natural law, constitution, righteousness, duty, virtue, cosmic order
  noun (masculine)
  from root dhṛ (to uphold, support)
  Root: dhṛ (class 1)

अपि (api) - certainly, indeed (also, even, indeed, certainly)

(indeclinable)

अधोगतिम् (adhogatim) - a lower destination or state of being (gati) (lower state, downward path, descent)

(noun)

Accusative, feminine, singular of adhogati

adhogati - going downward, a lower state, hell, descent

Compound of adhas (down, below) and gati (going, state)

Compound type : avyayībhāva / tatpurusha (adhas+gati)

• adhas – below, beneath, downward
  indeclinable
• gati – going, motion, path, course, destination, state, condition
  noun (feminine)
  from root gam (to go)
  Root: gam (class 1)