महाभारतः mahābhārataḥ - book-5, chapter-147, verse-3

सोमः प्रजापतिः पूर्वं कुरूणां वंशवर्धनः ।
सोमाद्बभूव षष्ठो वै ययातिर्नहुषात्मजः ॥३॥

3. somaḥ prajāpatiḥ pūrvaṁ kurūṇāṁ vaṁśavardhanaḥ ,
somādbabhūva ṣaṣṭho vai yayātirnahuṣātmajaḥ.

3. somaḥ prajāpatiḥ pūrvam kurūṇām vaṃśavardhanaḥ
somāt babhūva ṣaṣṭhaḥ vai yayātiḥ nahuṣātmajaḥ

3. pūrvam somaḥ prajāpatiḥ kurūṇām vaṃśavardhanaḥ [āsīt].
somāt ṣaṣṭhaḥ nahuṣātmajaḥ yayātiḥ vai babhūva.

3. Formerly, Soma, the progenitor (prajāpati), was the increaser of the Kuru lineage. From Soma, the sixth in descent, was born Yayāti, the son of Nahuṣa.

Words meanings summery:

• सोमः (somaḥ) - Soma (the lunar deity, progenitor of the lunar dynasty) (Soma (name of a deity, also a plant/drink))

• प्रजापतिः (prajāpatiḥ) - lord of creation, progenitor, creator

• पूर्वम् (pūrvam) - formerly, previously, before

• कुरूणाम् (kurūṇām) - of the Kurus

• वंशवर्धनः (vaṁśavardhanaḥ) - progenitor of the lineage (increaser of the lineage, extender of the family)

• सोमात् (somāt) - from Soma (in descent) (from Soma)

• बभूव (babhūva) - was born, came into being (was, became)

• षष्ठः (ṣaṣṭhaḥ) - the sixth (in descent) (sixth)

• वै (vai) - indeed, surely, verily

• ययातिः (yayātiḥ) - Yayāti (name of a king)

• नहुषात्मजः (nahuṣātmajaḥ) - son of Nahuṣa

Words meanings and morphology

सोमः (somaḥ) - Soma (the lunar deity, progenitor of the lunar dynasty) (Soma (name of a deity, also a plant/drink))

(proper noun)

Nominative, masculine, singular of soma

soma - Soma, the moon, the moon-plant

प्रजापतिः (prajāpatiḥ) - lord of creation, progenitor, creator

(noun)

Nominative, masculine, singular of prajāpati

prajāpati - lord of creatures, progenitor, creator (a title applied to various deities like Brahmā, Savitṛ, etc.)

Compound type : tatpuruṣa (prajā+pati)

• prajā – offspring, progeny, people, subjects
  noun (feminine)
• pati – lord, master, husband, owner
  noun (masculine)

पूर्वम् (pūrvam) - formerly, previously, before

(indeclinable)

कुरूणाम् (kurūṇām) - of the Kurus

(proper noun)

Genitive, masculine, plural of kuru

kuru - Kuru (name of an ancient king and his descendants, a tribe)

वंशवर्धनः (vaṁśavardhanaḥ) - progenitor of the lineage (increaser of the lineage, extender of the family)

(noun)

Nominative, masculine, singular of vaṃśavardhana

vaṁśavardhana - increaser of a family or race, perpetuator of a lineage

Compound type : tatpuruṣa (vaṃśa+vardhana)

• vaṃśa – bamboo, lineage, family, race, dynasty
  noun (masculine)
• vardhana – increasing, promoting, augmenting; an increaser, promoter
  noun (masculine)
  agent noun from causative root vṛdh
  Root: vṛdh (class 1)

सोमात् (somāt) - from Soma (in descent) (from Soma)

(proper noun)

Ablative, masculine, singular of soma

soma - Soma (name of a deity, also a plant/drink)

बभूव (babhūva) - was born, came into being (was, became)

(verb)

3rd person , singular, active, perfect (liṭ) of bhū

root bhū

Root: bhū (class 1)

षष्ठः (ṣaṣṭhaḥ) - the sixth (in descent) (sixth)

(adjective)

Nominative, masculine, singular of ṣaṣṭha

ṣaṣṭha - sixth

वै (vai) - indeed, surely, verily

(indeclinable)

ययातिः (yayātiḥ) - Yayāti (name of a king)

(proper noun)

Nominative, masculine, singular of yayāti

yayāti - Yayāti (a famous king of the lunar dynasty)

नहुषात्मजः (nahuṣātmajaḥ) - son of Nahuṣa

(noun)

Nominative, masculine, singular of nahuṣātmaja

nahuṣātmaja - son of Nahuṣa

Compound type : tatpuruṣa (nahuṣa+ātmaja)

• nahuṣa – Nahuṣa (a mythical king, father of Yayāti)
  proper noun (masculine)
• ātmaja – son, daughter (one born from the self or spirit)
  noun (masculine)
  compound of ātman and ja (born)