महाभारतः mahābhārataḥ - book-12, chapter-183, verse-3

स्वर्गः प्रकाश इत्याहुर्नरकं तम एव च ।
सत्यानृतात्तदुभयं प्राप्यते जगतीचरैः ॥३॥

3. svargaḥ prakāśa ityāhurnarakaṁ tama eva ca ,
satyānṛtāttadubhayaṁ prāpyate jagatīcaraiḥ.

3. svargaḥ prakāśaḥ iti āhuḥ narakam tamaḥ eva ca
| satyānṛtāt tat ubhayam prāpyate jagatīcaraiḥ

3. (janaḥ) svargaḥ prakāśaḥ (asti) narakam ca tamaḥ eva (asti)
iti āhuḥ jagatīcaraiḥ satyānṛtāt tat ubhayam prāpyate

3. They say that heaven is light, and hell is indeed darkness. Both of these are attained by beings on earth through truth and untruth.

Words meanings summery:

• स्वर्गः (svargaḥ) - heaven, heavenly abode

• प्रकाशः (prakāśaḥ) - light, radiance, manifestation

• इति (iti) - thus, so, a marker for quoted speech or thought

• आहुः (āhuḥ) - they say, they declare

• नरकम् (narakam) - hell, infernal regions

• तमः (tamaḥ) - darkness, ignorance, inertia

• एव (eva) - indeed, only, just, certainly

• च (ca) - and, also

• सत्यानृतात् (satyānṛtāt) - from truth and untruth

• तत् (tat) - Refers to 'both heaven and hell'. (that, this)

• उभयम् (ubhayam) - Refers to heaven and hell. (both, the two)

• प्राप्यते (prāpyate) - is attained, is obtained

• जगतीचरैः (jagatīcaraiḥ) - by those who move on earth, by terrestrial beings

Words meanings and morphology

स्वर्गः (svargaḥ) - heaven, heavenly abode

(noun)

Nominative, masculine, singular of svarga

svarga - heaven, paradise, celestial world

प्रकाशः (prakāśaḥ) - light, radiance, manifestation

(noun)

Nominative, masculine, singular of prakāśa

prakāśa - light, brightness, manifestation, clarity

From pra- + √kāś

Prefix: pra

Root: kāś

इति (iti) - thus, so, a marker for quoted speech or thought

(indeclinable)

आहुः (āhuḥ) - they say, they declare

(verb)

3rd person , plural, active, past perfect (liṭ) of ah

Perfect active

From root √ah (archaic root), used specifically in 3rd plural perfect

Root: ah

नरकम् (narakam) - hell, infernal regions

(noun)

Nominative, masculine, singular of naraka

naraka - hell, infernal region, place of torment

Note: Used here as a noun, parallel to svarga.

तमः (tamaḥ) - darkness, ignorance, inertia

(noun)

Nominative, neuter, singular of tamas

tamas - darkness, ignorance, inertia

Root: tam

एव (eva) - indeed, only, just, certainly

(indeclinable)

Emphatic particle

च (ca) - and, also

(indeclinable)

सत्यानृतात् (satyānṛtāt) - from truth and untruth

(noun)

Ablative, neuter, singular of satyānṛta

satyānṛta - truth and untruth, true and false

Dvandva compound

Compound type : dvandva (satya+anṛta)

• satya – truth, reality, true
  noun (neuter)
• anṛta – untruth, falsehood, false
  noun (neuter)
  Negation (a-privative) of ṛta (truth, cosmic order)
  Prefix: a

तत् (tat) - Refers to 'both heaven and hell'. (that, this)

(pronoun)

Nominative, neuter, singular of tad

tad - that, this, it

Demonstrative pronoun

Note: Here in neuter nominative singular, referring to the subsequent 'ubhayam'.

उभयम् (ubhayam) - Refers to heaven and hell. (both, the two)

(pronoun)

Nominative, neuter, singular of ubhaya

ubhaya - both

Numeral adjective/pronoun

Note: Serves as a noun here.

प्राप्यते (prāpyate) - is attained, is obtained

(verb)

3rd person , singular, passive, present (laṭ) of prāp

Present passive

From pra- + √āp (cl. 5) in passive voice

Prefix: pra

Root: āp (class 5)

जगतीचरैः (jagatīcaraiḥ) - by those who move on earth, by terrestrial beings

(noun)

Instrumental, masculine, plural of jagatīcara

jagatīcara - moving on earth, terrestrial

Tatpurusha compound

Compound type : tatpurusha (jagatī+cara)

• jagatī – earth, world
  noun (feminine)
• cara – moving, going, dweller
  adjective (masculine)
  From root √car 'to move, wander'
  Root: car (class 1)

Note: Refers to people, implicitly.