महाभारतः mahābhārataḥ - book-6, chapter-105, verse-7

यथाप्रतिज्ञं कौरव्य स चापि समितिंजयः ।
पार्थानामकरोद्भीष्मः सततं समितिक्षयम् ॥७॥

7. yathāpratijñaṁ kauravya sa cāpi samitiṁjayaḥ ,
pārthānāmakarodbhīṣmaḥ satataṁ samitikṣayam.

7. yathā-pratijñam kauravya saḥ ca api samiti-ñ-jayaḥ
pārthānām akarot bhīṣmaḥ satatam samiti-kṣayam

7. kauravya ca saḥ api yathā-pratijñam samiti-ñ-jayaḥ
bhīṣmaḥ satatam pārthānām samiti-kṣayam akarot

7. And that Bhishma (bhīṣma), O descendant of Kuru (kauravya), true to his vow (yathāpratijñam) and victorious in battle (samitiñjaya), constantly inflicted destruction (samitikṣayam) upon the Pārthas (Pāṇḍavas).

Words meanings summery:

• यथा-प्रतिज्ञम् (yathā-pratijñam) - According to Bhishma's vow (according to the vow, as promised)

• कौरव्य (kauravya) - Addressing Dhritarashtra (O descendant of Kuru)

• सः (saḥ) - He (Bhishma) (he, that)

• च (ca) - and, also

• अपि (api) - also, even, too

• समिति-ञ्-जयः (samiti-ñ-jayaḥ) - Epithet for Bhishma, indicating his prowess in warfare. (victorious in battle/assemblies)

• पार्थानाम् (pārthānām) - Of the Pāṇḍavas (of the Pārthas, of the sons of Pritha)

• अकरोत् (akarot) - he did, he made, he caused

• भीष्मः (bhīṣmaḥ) - The venerable grandfather Bhishma (Bhishma)

• सततम् (satatam) - constantly, perpetually, always

• समिति-क्षयम् (samiti-kṣayam) - The destruction of the Pāṇḍava forces. (destruction of armies/assemblies, depletion of forces)

Words meanings and morphology

यथा-प्रतिज्ञम् (yathā-pratijñam) - According to Bhishma's vow (according to the vow, as promised)

(indeclinable)

Compound type : avyayībhāva (yathā+pratijñā)

• yathā – as, according to, just as
  indeclinable
• pratijñā – vow, promise, agreement, declaration
  noun (feminine)
  Prefix: prati
  Root: jñā (class 9)

कौरव्य (kauravya) - Addressing Dhritarashtra (O descendant of Kuru)

(proper noun)

Vocative, masculine, singular of kauravya

kauravya - descendant of Kuru, a Kaurava

सः (saḥ) - He (Bhishma) (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

Note: Refers to Bhishma.

च (ca) - and, also

(indeclinable)

अपि (api) - also, even, too

(indeclinable)

समिति-ञ्-जयः (samiti-ñ-jayaḥ) - Epithet for Bhishma, indicating his prowess in warfare. (victorious in battle/assemblies)

(adjective)

Nominative, masculine, singular of samiti-jaya

samiti-jaya - victorious in assembly, victorious in battle

Compound type : tatpuruṣa (samiti+jaya)

• samiti – assembly, council, battle, encounter
  noun (feminine)
  Prefix: sam
  Root: i (class 2)
• jaya – victory, triumph, conquest
  noun (masculine)
  From root 'ji' (to conquer)
  Root: ji (class 1)

Note: Agrees with 'bhīṣmaḥ'.

पार्थानाम् (pārthānām) - Of the Pāṇḍavas (of the Pārthas, of the sons of Pritha)

(proper noun)

Genitive, masculine, plural of pārtha

pārtha - son of Pritha (Kunti), Arjuna, Yudhiṣṭhira, Bhīma

Derived from Prithā.

Note: Qualifies 'samiti-kṣayam'.

अकरोत् (akarot) - he did, he made, he caused

(verb)

3rd person , singular, active, past imperfect (laṅ) of kṛ

Imperfect Active

Root 'kṛ' (8th class), Parasmaipada, imperfect tense.

Root: kṛ (class 8)

भीष्मः (bhīṣmaḥ) - The venerable grandfather Bhishma (Bhishma)

(proper noun)

Nominative, masculine, singular of bhīṣma

bhīṣma - Bhishma (proper noun), terrible, formidable

Note: Subject of 'akarot'.

सततम् (satatam) - constantly, perpetually, always

(indeclinable)

Past Passive Participle

From sam-tan (to stretch, extend). Often used adverbially.

Prefix: sam

Root: tan (class 8)

समिति-क्षयम् (samiti-kṣayam) - The destruction of the Pāṇḍava forces. (destruction of armies/assemblies, depletion of forces)

(noun)

Accusative, masculine, singular of samiti-kṣaya

samiti-kṣaya - destruction of assembly/battle, depletion of forces

Compound type : tatpuruṣa (samiti+kṣaya)

• samiti – assembly, council, battle, encounter
  noun (feminine)
  Prefix: sam
  Root: i (class 2)
• kṣaya – destruction, decay, loss, decline
  noun (masculine)
  From root 'kṣi' (to destroy, diminish)
  Root: kṣi (class 5)

Note: Object of 'akarot'.