महाभारतः mahābhārataḥ - book-7, chapter-172, verse-51

योऽसौ नारायणो नाम पूर्वेषामपि पूर्वजः ।
अजायत च कार्यार्थं पुत्रो धर्मस्य विश्वकृत् ॥५१॥

51. yo'sau nārāyaṇo nāma pūrveṣāmapi pūrvajaḥ ,
ajāyata ca kāryārthaṁ putro dharmasya viśvakṛt.

51. yaḥ asau nārāyaṇaḥ nāma pūrveṣām api pūrvajaḥ
ajāyata ca kāryārtham putraḥ dharmasya viśvakṛt

51. asau yaḥ nārāyaṇaḥ nāma pūrveṣām api pūrvajaḥ
viśvakṛt ca kāryārtham dharmasya putraḥ ajāyata

51. That very being, known as Nārāyaṇa, who is the progenitor even of the most ancient ones and the creator of the universe (viśvakṛt), was born as the son of Dharma (dharma) for a specific task.

Words meanings summery:

• यः (yaḥ) - who, which

• असौ (asau) - that, that one

• नारायणः (nārāyaṇaḥ) - Nārāyaṇa

• नाम (nāma) - by name, indeed, known as

• पूर्वेषाम् (pūrveṣām) - of the ancients, of the former ones

• अपि (api) - even, also

• पूर्वजः (pūrvajaḥ) - first-born, progenitor, ancestor

• अजायत (ajāyata) - was born

• च (ca) - and, also

• कार्यार्थम् (kāryārtham) - for the purpose of a task/action

• पुत्रः (putraḥ) - son

• धर्मस्य (dharmasya) - of Dharma (the deity), of the intrinsic nature/natural law

• विश्वकृत् (viśvakṛt) - creator of the universe, world-maker

Words meanings and morphology

यः (yaḥ) - who, which

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what

असौ (asau) - that, that one

(pronoun)

Nominative, masculine, singular of adas

adas - that, yonder, such a one

नारायणः (nārāyaṇaḥ) - Nārāyaṇa

(proper noun)

Nominative, masculine, singular of nārāyaṇa

nārāyaṇa - Nārāyaṇa (a name of Vishnu/Krishna)

नाम (nāma) - by name, indeed, known as

(indeclinable)

पूर्वेषाम् (pūrveṣām) - of the ancients, of the former ones

(adjective)

Genitive, masculine, plural of pūrva

pūrva - former, ancient, first, prior

Note: Used here as a substantive referring to ancient beings or ancestors.

अपि (api) - even, also

(indeclinable)

पूर्वजः (pūrvajaḥ) - first-born, progenitor, ancestor

(noun)

Nominative, masculine, singular of pūrvaja

pūrvaja - first-born, progenitor, ancestor

Compound type : tatpurusha (pūrva+ja)

• pūrva – first, prior, ancient
  adjective (masculine)
• ja – born from, produced by
  adjective (masculine)
  Suffix -ja from root jan (to be born)
  Root: jan (class 4)

अजायत (ajāyata) - was born

(verb)

3rd person , singular, middle, imperfect (laṅ) of jan

Root: jan (class 4)

च (ca) - and, also

(indeclinable)

कार्यार्थम् (kāryārtham) - for the purpose of a task/action

(indeclinable)

Compound type : tatpurusha (kārya+artha)

• kārya – to be done, task, action, duty
  participle (neuter)
  Gerundive
  Formed from root kṛ with suffix -ya
  Root: kṛ (class 8)
• artha – purpose, sake, meaning
  noun (masculine)

Note: Used adverbially to denote purpose.

पुत्रः (putraḥ) - son

(noun)

Nominative, masculine, singular of putra

putra - son

धर्मस्य (dharmasya) - of Dharma (the deity), of the intrinsic nature/natural law

(noun)

Genitive, masculine, singular of dharma

dharma - Dharma (the deity), natural law, intrinsic nature (dharma), righteousness, duty

विश्वकृत् (viśvakṛt) - creator of the universe, world-maker

(noun)

Nominative, masculine, singular of viśvakṛt

viśvakṛt - creator of the universe, world-maker

Compound type : upapada tatpurusha (viśva+kṛt)

• viśva – all, universe, world
  adjective (neuter)
• kṛt – making, doing, creator
  noun (masculine)
  Derived from root kṛ with suffix -kvip
  Root: kṛ (class 8)