महाभारतः mahābhārataḥ - book-9, chapter-15, verse-27

पाञ्चालानां सोमकानां मत्स्यानां च विशेषतः ।
प्रतिज्ञां तां च संग्रामे धर्मराजस्य पूरयन् ॥२७॥

27. pāñcālānāṁ somakānāṁ matsyānāṁ ca viśeṣataḥ ,
pratijñāṁ tāṁ ca saṁgrāme dharmarājasya pūrayan.

27. pāñcālānām somakānām matsyānām ca viśeṣataḥ
pratijñām tām ca saṅgrāme dharmarājasya pūrayan

27. pūrayan dharmarājasya tām pratijñām saṅgrāme
ca pāñcālānām somakānām matsyānām ca viśeṣataḥ

27. And fulfilling that vow of the king of righteousness (dharmarāja) in battle, especially on behalf of the Pañcālas, Somakas, and Matsyas.

Words meanings summery:

• पाञ्चालानाम् (pāñcālānām) - of the Pañcālas

• सोमकानाम् (somakānām) - of the Somakas

• मत्स्यानाम् (matsyānām) - of the Matsyas

• च (ca) - and

• विशेषतः (viśeṣataḥ) - especially; particularly; in particular

• प्रतिज्ञाम् (pratijñām) - the vow; the promise

• ताम् (tām) - that

• च (ca) - and

• सङ्ग्रामे (saṅgrāme) - in battle; in combat

• धर्मराजस्य (dharmarājasya) - of the king of righteousness; of Yudhiṣṭhira

• पूरयन् (pūrayan) - fulfilling; completing; accomplishing

Words meanings and morphology

पाञ्चालानाम् (pāñcālānām) - of the Pañcālas

(proper noun)

Genitive, masculine, plural of pāñcāla

pāñcāla - a member of the Pañcāla tribe; belonging to the Pañcālas; (name of a people/country)

सोमकानाम् (somakānām) - of the Somakas

(proper noun)

Genitive, masculine, plural of somaka

somaka - a member of the Somaka tribe; (name of a people)

मत्स्यानाम् (matsyānām) - of the Matsyas

(proper noun)

Genitive, masculine, plural of matsya

matsya - a member of the Matsya tribe; (name of a people/country)

च (ca) - and

(indeclinable)

विशेषतः (viśeṣataḥ) - especially; particularly; in particular

(indeclinable)

Derived from 'viśeṣa' (distinction, specialty) with the suffix 'tas'.

प्रतिज्ञाम् (pratijñām) - the vow; the promise

(noun)

Accusative, feminine, singular of pratijñā

pratijñā - promise; vow; agreement; declaration

From 'prati' + root 'jñā' (to know, recognize).

Prefix: prati

Root: jñā (class 9)

ताम् (tām) - that

(pronoun)

Accusative, feminine, singular of tad

tad - that; this; he; she; it

Note: Refers to 'pratijñām'.

च (ca) - and

(indeclinable)

सङ्ग्रामे (saṅgrāme) - in battle; in combat

(noun)

Locative, masculine, singular of saṅgrāma

saṅgrāma - battle; fight; combat; war

From 'sam' + root 'grām' (to go, move), or 'sam' + 'grāma' (village, multitude).

धर्मराजस्य (dharmarājasya) - of the king of righteousness; of Yudhiṣṭhira

(proper noun)

Genitive, masculine, singular of dharmarāja

dharmarāja - king of righteousness; king of justice; a title for Yudhiṣṭhira; Yama

Compound type : tatpuruṣa (dharma+rāja)

• dharma – righteousness; natural law; duty; virtue; intrinsic nature; constitution
  noun (masculine)
  From root 'dhṛ' (to hold, support).
  Root: dhṛ (class 1)
• rāja – king; ruler; sovereign
  noun (masculine)
  From root 'rāj' (to shine, rule).
  Root: rāj (class 1)

पूरयन् (pūrayan) - fulfilling; completing; accomplishing

(participle)

Nominative, masculine, singular of pūrayat

pūrayat - fulfilling; filling; completing; causing to fill

Present Active Participle

From causative of root 'pṛ' (to fill, nourish).

Root: pṛ (class 3)

Note: Implies the subject is performing this action.