महाभारतः mahābhārataḥ - book-7, chapter-82, verse-8

तं निहत्य रणे हृष्टो बृहत्क्षत्रो महारथः ।
सहसाभ्यपतत्सैन्यं तावकं पार्थकारणात् ॥८॥

8. taṁ nihatya raṇe hṛṣṭo bṛhatkṣatro mahārathaḥ ,
sahasābhyapatatsainyaṁ tāvakaṁ pārthakāraṇāt.

8. tam nihatya raṇe hṛṣṭaḥ bṛhatkṣatraḥ mahārathaḥ
sahasā abhyapatat sainyam tāvakam pārthakāraṇāt

8. hṛṣṭaḥ mahārathaḥ bṛhatkṣatraḥ tam raṇe nihatya
pārthakāraṇāt sahasā tāvakam sainyam abhyapatat

8. Delighted, the great charioteer Brihatkṣatra, having killed him in battle, suddenly attacked your army for Arjuna's sake.

Words meanings summery:

• तम् (tam) - him, that

• निहत्य (nihatya) - having killed, having struck down

• रणे (raṇe) - in battle, in combat

• हृष्टः (hṛṣṭaḥ) - delighted, joyful, pleased

• बृहत्क्षत्रः (bṛhatkṣatraḥ) - Brihatkṣatra

• महारथः (mahārathaḥ) - a great charioteer, great warrior

• सहसा (sahasā) - suddenly, forcibly, quickly

• अभ्यपतत् (abhyapatat) - he attacked, he fell upon

• सैन्यम् (sainyam) - army, host

• तावकम् (tāvakam) - your, belonging to you (Dhṛtarāṣṭra)

• पार्थकारणात् (pārthakāraṇāt) - for Arjuna's sake, on account of Arjuna

Words meanings and morphology

तम् (tam) - him, that

(pronoun)

Accusative, masculine, singular of tad

tad - that, he, she, it

निहत्य (nihatya) - having killed, having struck down

(indeclinable)

Absolutive (Gerund)

Derived from root 'han' with prefix 'ni', forming an absolutive.

Prefix: ni

Root: han (class 2)

रणे (raṇe) - in battle, in combat

(noun)

Locative, masculine, singular of raṇa

raṇa - battle, combat, war

हृष्टः (hṛṣṭaḥ) - delighted, joyful, pleased

(adjective)

Nominative, masculine, singular of hṛṣṭa

hṛṣṭa - delighted, joyful, pleased

Past Passive Participle

Root: hṛṣ

बृहत्क्षत्रः (bṛhatkṣatraḥ) - Brihatkṣatra

(proper noun)

Nominative, masculine, singular of bṛhatkṣatra

bṛhatkṣatra - Brihatkṣatra (name of a warrior)

Compound type : Bahuvrīhi (bṛhat+kṣatra)

• bṛhat – great, large, vast
  adjective
• kṣatra – rule, dominion, power, warrior class
  noun (neuter)

महारथः (mahārathaḥ) - a great charioteer, great warrior

(noun)

Nominative, masculine, singular of mahāratha

mahāratha - great charioteer, a warrior capable of fighting 10,000 warriors

Compound type : Karmadhāraya (mahā+ratha)

• mahā – great, large
  adjective
• ratha – chariot, warrior (on a chariot)
  noun (masculine)

सहसा (sahasā) - suddenly, forcibly, quickly

(indeclinable)

अभ्यपतत् (abhyapatat) - he attacked, he fell upon

(verb)

3rd person , singular, active, Imperfect (laṅ) of abhipat

Prefix: abhi

Root: pat (class 1)

सैन्यम् (sainyam) - army, host

(noun)

Accusative, neuter, singular of sainya

sainya - army, host

तावकम् (tāvakam) - your, belonging to you (Dhṛtarāṣṭra)

(adjective)

Accusative, neuter, singular of tāvaka

tāvaka - your, belonging to you

पार्थकारणात् (pārthakāraṇāt) - for Arjuna's sake, on account of Arjuna

(noun)

Ablative, neuter, singular of pārthakāraṇa

pārthakāraṇa - the reason of Arjuna, the cause of Arjuna

Compound type : Tatpuruṣa (pārtha+kāraṇa)

• pārtha – son of Pṛthā (Kuntī), Arjuna
  proper noun (masculine)
• kāraṇa – cause, reason, instrument
  noun (neuter)