महाभारतः mahābhārataḥ - book-7, chapter-172, verse-81

तावेतौ पूर्वदेवानां परमोपचितावृषी ।
लोकयात्राविधानार्थं संजायेते युगे युगे ॥८१॥

81. tāvetau pūrvadevānāṁ paramopacitāvṛṣī ,
lokayātrāvidhānārthaṁ saṁjāyete yuge yuge.

81. tau etau pūrvadevānām paramopacitau ṛṣī
lokayātrāvidhānārtham sañjāyete yuge yuge

81. etau tau pūrvadevānām paramopacitau ṛṣī
lokayātrāvidhānārtham yuge yuge sañjāyete

81. These two, the greatly revered sages of the ancient deities, are born age after age to establish the order of the world.

Words meanings summery:

• तौ (tau) - those two

• एतौ (etau) - these two

• पूर्वदेवानाम् (pūrvadevānām) - of the ancient deities, of the former gods

• परमोपचितौ (paramopacitau) - greatly accumulated, supremely revered

• ऋषी (ṛṣī) - two sages

• लोकयात्राविधानार्थम् (lokayātrāvidhānārtham) - for the purpose of establishing the world's order/course

• सञ्जायेते (sañjāyete) - they are born

• युगे (yuge) - in an age, in an epoch

• युगे (yuge) - in an age, in an epoch

Words meanings and morphology

तौ (tau) - those two

(pronoun)

Nominative, masculine, dual of tad

tad - that, those

एतौ (etau) - these two

(pronoun)

Nominative, masculine, dual of etad

etad - this, these

पूर्वदेवानाम् (pūrvadevānām) - of the ancient deities, of the former gods

(noun)

Genitive, masculine, plural of pūrvadeva

pūrvadeva - ancient deity, former god

Compound type : karmadhāraya (pūrva+deva)

• pūrva – prior, former, ancient
  adjective (masculine)
• deva – god, deity
  noun (masculine)
  Root: div (class 1)

परमोपचितौ (paramopacitau) - greatly accumulated, supremely revered

(adjective)

Nominative, masculine, dual of paramopacita

paramopacita - greatly accumulated, supremely revered, highly esteemed

Compound type : karmadhāraya (parama+upacita)

• parama – supreme, highest, ultimate, excellent
  adjective (masculine)
• upacita – accumulated, increased, augmented, revered, esteemed
  adjective (masculine)
  Past Passive Participle
  Derived from root 'ci' (to gather) with prefix 'upa'
  Prefix: upa
  Root: ci (class 5)

Note: Adjective for ṛṣī.

ऋषी (ṛṣī) - two sages

(noun)

Nominative, masculine, dual of ṛṣi

ṛṣi - sage, seer, inspired poet

लोकयात्राविधानार्थम् (lokayātrāvidhānārtham) - for the purpose of establishing the world's order/course

(indeclinable)

Compound type : tatpuruṣa (loka+yātrā+vidhāna+artha)

• loka – world, realm, people
  noun (masculine)
• yātrā – journey, course, progress, livelihood
  noun (feminine)
  Root: yā (class 2)
• vidhāna – arrangement, ordinance, rule, establishment
  noun (neuter)
  Derived from root 'dhā' with prefix 'vi'
  Prefix: vi
  Root: dhā (class 3)
• artha – purpose, meaning, wealth, object
  noun (masculine)
  Root: ṛ (class 3)

Note: Accusative singular used adverbially for purpose.

सञ्जायेते (sañjāyete) - they are born

(verb)

3rd person , dual, middle, present (laṭ) of sañjā

Root 'jan' with prefix 'sam', in passive/middle voice

Prefix: sam

Root: jan (class 4)

Note: Root jan (to be born) often used in the middle voice.

युगे (yuge) - in an age, in an epoch

(noun)

Locative, neuter, singular of yuga

yuga - age, epoch, yoke, pair

Root: yuj (class 7)

युगे (yuge) - in an age, in an epoch

(noun)

Locative, neuter, singular of yuga

yuga - age, epoch, yoke, pair

Root: yuj (class 7)

Note: Repetition implies "in every age" or "age after age".