महाभारतः mahābhārataḥ - book-12, chapter-281, verse-13

विश्वामित्रस्य पुत्रत्वमृचीकतनयोऽगमत् ।
ऋग्भिः स्तुत्वा महाभागो देवान्वै यज्ञभागिनः ॥१३॥

13. viśvāmitrasya putratvamṛcīkatanayo'gamat ,
ṛgbhiḥ stutvā mahābhāgo devānvai yajñabhāginaḥ.

13. viśvāmitrasya putratvam ṛcīkatanayaḥ agamat
ṛgbhiḥ stutvā mahābhāgaḥ devān vai yajñabhāginaḥ

13. mahābhāgaḥ ṛcīkatanayaḥ ṛgbhiḥ devān vai
yajñabhāginaḥ stutvā viśvāmitrasya putratvam agamat

13. The highly esteemed son of Ṛcīka attained sonship to Viśvāmitra, after he had praised the gods — indeed, those who partake in Vedic rituals (yajña) — with verses from the Ṛg Veda.

Words meanings summery:

• विश्वामित्रस्य (viśvāmitrasya) - of Viśvāmitra

• पुत्रत्वम् (putratvam) - sonship, state of being a son

• ऋचीकतनयः (ṛcīkatanayaḥ) - referring to Śunaḥśepa (the son of Ṛcīka)

• अगमत् (agamat) - he attained, he went, he reached

• ऋग्भिः (ṛgbhiḥ) - by Ṛg Veda verses, by hymns

• स्तुत्वा (stutvā) - having praised, having glorified

• महाभागः (mahābhāgaḥ) - the greatly fortunate one, the illustrious one

• देवान् (devān) - gods, deities

• वै (vai) - indeed, certainly, verily

• यज्ञभागिनः (yajñabhāginaḥ) - sharers in Vedic rituals, partakers in offerings

Words meanings and morphology

विश्वामित्रस्य (viśvāmitrasya) - of Viśvāmitra

(proper noun)

Genitive, masculine, singular of viśvāmitra

viśvāmitra - Viśvāmitra (a revered Vedic sage)

पुत्रत्वम् (putratvam) - sonship, state of being a son

(noun)

Accusative, neuter, singular of putratva

putratva - sonship, filiation, state of being a son

From 'putra' (son) + suffix 'tva' (abstract noun suffix)

Note: Object of 'agamat'.

ऋचीकतनयः (ṛcīkatanayaḥ) - referring to Śunaḥśepa (the son of Ṛcīka)

(proper noun)

Nominative, masculine, singular of ṛcīkatanaya

ṛcīkatanaya - son of Ṛcīka (referring to Śunaḥśepa or Jamadagni)

Compound type : tatpurusha (ṛcīka+tanaya)

• ṛcīka – Ṛcīka (a sage, father of Jamadagni and Śunaḥśepa)
  proper noun (masculine)
• tanaya – son, offspring
  noun (masculine)
  From root tan (to extend, produce)
  Root: tan (class 8)

Note: Subject of 'agamat'.

अगमत् (agamat) - he attained, he went, he reached

(verb)

3rd person , singular, active, imperfect (laṅ) of gam

Imperfect 3rd person singular active. 'a-gam-at'.

Root: gam (class 1)

ऋग्भिः (ṛgbhiḥ) - by Ṛg Veda verses, by hymns

(noun)

Instrumental, feminine, plural of ṛc

ṛc - Ṛg Veda verse, hymn, praise

Root: arc (class 1)

Note: Means by means of the Ṛg Veda verses.

स्तुत्वा (stutvā) - having praised, having glorified

(indeclinable)

Absolutive (gerund)

Formed from root 'stu' (to praise) + suffix '-tvā'.

Root: stu (class 2)

महाभागः (mahābhāgaḥ) - the greatly fortunate one, the illustrious one

(adjective)

Nominative, masculine, singular of mahābhāga

mahābhāga - greatly fortunate, illustrious, highly esteemed, noble

Compound type : karmadhāraya (mahā+bhāga)

• mahā – great, large
  adjective
• bhāga – share, portion, fortune
  noun (masculine)
  From root bhaj (to divide, obtain)
  Root: bhaj (class 1)

देवान् (devān) - gods, deities

(noun)

Accusative, masculine, plural of deva

deva - god, deity

Root: div (class 4)

Note: Object of 'stutvā'.

वै (vai) - indeed, certainly, verily

(indeclinable)

यज्ञभागिनः (yajñabhāginaḥ) - sharers in Vedic rituals, partakers in offerings

(adjective)

Accusative, masculine, plural of yajñabhāgin

yajñabhāgin - partaking in Vedic rituals (yajña), sharing in offerings

From 'yajña' (ritual) + 'bhāgin' (sharer).

Compound type : tatpurusha (yajña+bhāgin)

• yajña – Vedic ritual, offering, worship
  noun (masculine)
  From root yaj (to worship)
  Root: yaj (class 1)
• bhāgin – sharer, partaker, possessor of a share
  adjective (masculine)
  Agent noun
  From 'bhāga' (share) + suffix '-in'.
  Root: bhaj (class 1)

Note: Used predicatively or as an epithet for the gods.