महाभारतः mahābhārataḥ - book-12, chapter-315, verse-30

देवयानचरो विष्णोः पितृयानश्च तामसः ।
द्वावेतौ प्रेत्य पन्थानौ दिवं चाधश्च गच्छतः ॥३०॥

30. devayānacaro viṣṇoḥ pitṛyānaśca tāmasaḥ ,
dvāvetau pretya panthānau divaṁ cādhaśca gacchataḥ.

30. devayānacaraḥ viṣṇoḥ pitṛyānaḥ ca tāmasaḥ dvau
etau pretya panthānau divam ca adhaḥ ca gacchataḥ

30. viṣṇoḥ devayānacaraḥ ca tāmasaḥ pitṛyānaḥ dvau
etau panthānau pretya divam ca adhaḥ ca gacchataḥ

30. The path of the gods (devayāna) is related to Vishnu, while the path of the ancestors (pitṛyāna) is of the nature of darkness (tamas). After departing from the body, these two paths lead, one upwards to the celestial realms and the other downwards.

Words meanings summery:

• देवयानचरः (devayānacaraḥ) - traveler on the path of gods; relating to the path of gods

• विष्णोः (viṣṇoḥ) - of Vishnu

• पितृयानः (pitṛyānaḥ) - path of the ancestors (pitṛyāna)

• च (ca) - and

• तामसः (tāmasaḥ) - of darkness, ignorant, characterized by tamas

• द्वौ (dvau) - two

• एतौ (etau) - these (two)

• प्रेत्य (pretya) - having departed, after death

• पन्थानौ (panthānau) - paths (two)

• दिवम् (divam) - to heaven, to the sky

• च (ca) - and

• अधः (adhaḥ) - downwards, below

• च (ca) - and

• गच्छतः (gacchataḥ) - they (two) go, they proceed

Words meanings and morphology

देवयानचरः (devayānacaraḥ) - traveler on the path of gods; relating to the path of gods

(noun)

Nominative, masculine, singular of devayānacara

devayānacara - one who moves on the path of gods; pertaining to the path of gods (devayāna)

Compound type : tatpuruṣa (deva+yāna+cara)

• deva – god, deity, divine
  noun (masculine)
• yāna – vehicle, path, journey
  noun (neuter)
  Derived from root 'yā' (to go)
  Root: yā (class 2)
• cara – moving, going, traveler, associated with
  adjective (masculine)
  Derived from root 'car' (to move)
  Root: car (class 1)

विष्णोः (viṣṇoḥ) - of Vishnu

(proper noun)

Genitive, masculine, singular of viṣṇu

viṣṇu - Vishnu (a principal deity in Hinduism)

पितृयानः (pitṛyānaḥ) - path of the ancestors (pitṛyāna)

(noun)

Nominative, masculine, singular of pitṛyāna

pitṛyāna - path of the ancestors, ancestral path

Compound type : tatpuruṣa (pitṛ+yāna)

• pitṛ – father, ancestor
  noun (masculine)
• yāna – vehicle, path, journey
  noun (neuter)
  Derived from root 'yā' (to go)
  Root: yā (class 2)

च (ca) - and

(indeclinable)

तामसः (tāmasaḥ) - of darkness, ignorant, characterized by tamas

(adjective)

Nominative, masculine, singular of tāmasa

tāmasa - relating to tamas; dark, ignorant, deluded

Derived from 'tamas' (darkness) with suffix 'a' indicating 'of the nature of'.

द्वौ (dvau) - two

(numeral adjective)

एतौ (etau) - these (two)

(pronoun)

Nominative, masculine, dual of etas

etas - this, these

Demonstrative pronoun.

प्रेत्य (pretya) - having departed, after death

(indeclinable)

absolutive

Absolutive (gerund) of verb root 'i' (to go) with prefix 'pra'.

Prefix: pra

Root: i (class 2)

पन्थानौ (panthānau) - paths (two)

(noun)

Nominative, masculine, dual of pathin

pathin - path, way, road

दिवम् (divam) - to heaven, to the sky

(noun)

Accusative, feminine, singular of div

div - sky, heaven, celestial region

च (ca) - and

(indeclinable)

अधः (adhaḥ) - downwards, below

(indeclinable)

Adverb.

च (ca) - and

(indeclinable)

गच्छतः (gacchataḥ) - they (two) go, they proceed

(verb)

3rd person , dual, active, present indicative (laṭ) of gam

Root verb, class 1 (bhvādi) with present stem gaccha-

Root: gam (class 1)