महाभारतः mahābhārataḥ - book-8, chapter-23, verse-4

तस्मात्पार्थविनाशार्थं हितार्थं मम चैव हि ।
सारथ्यं रथिनां श्रेष्ठ सुमनाः कर्तुमर्हसि ॥४॥

4. tasmātpārthavināśārthaṁ hitārthaṁ mama caiva hi ,
sārathyaṁ rathināṁ śreṣṭha sumanāḥ kartumarhasi.

4. tasmāt pārthavināśārtham hitārtham mama ca eva hi
sārathyam rathinām śreṣṭha sumanāḥ kartum arhasi

4. tasmāt,
rathinām śreṣṭha,
pārthavināśārtham mama hitārtham ca eva hi sumanāḥ sārathyam kartum arhasi

4. Therefore, O best among warriors on chariots, you should gladly undertake the role of a charioteer for the destruction of Arjuna (Pārtha) and indeed for my benefit.

Words meanings summery:

• तस्मात् (tasmāt) - therefore, from that

• पार्थविनाशार्थम् (pārthavināśārtham) - for the destruction of Arjuna (Pārtha)

• हितार्थम् (hitārtham) - for the benefit, for the welfare

• मम (mama) - my, of me

• च (ca) - and

• एव (eva) - indeed, only, just

• हि (hi) - indeed, surely, for

• सारथ्यम् (sārathyam) - charioteering, the duty of a charioteer

• रथिनाम् (rathinām) - of charioteers, of warriors on chariots

• श्रेष्ठ (śreṣṭha) - O best, O most excellent

• सुमनाः (sumanāḥ) - well-minded, benevolent, glad, joyful

• कर्तुम् (kartum) - to do, to perform, to make

• अर्हसि (arhasi) - you ought, you are able, you are fit

Words meanings and morphology

तस्मात् (tasmāt) - therefore, from that

(indeclinable)

पार्थविनाशार्थम् (pārthavināśārtham) - for the destruction of Arjuna (Pārtha)

(indeclinable)

Compound ending in -artha (for the sake of) acting adverbially.

Compound type : caturthī-tatpuruṣa (pārtha+vināśa+artha)

• pārtha – son of Pṛthā (Kunti), Arjuna
  proper noun (masculine)
• vināśa – destruction, ruin, loss
  noun (masculine)
  Prefix: vi
  Root: naś (class 4)
• artha – purpose, aim, for the sake of
  noun (masculine)

हितार्थम् (hitārtham) - for the benefit, for the welfare

(indeclinable)

Compound ending in -artha (for the sake of) acting adverbially.

Compound type : caturthī-tatpuruṣa (hita+artha)

• hita – beneficial, good, welfare, benefit
  noun (neuter)
  Past Passive Participle
  From root dhā (to place), with prefix hi and irregular formation, or root hi (to send, move).
• artha – purpose, aim, for the sake of
  noun (masculine)

मम (mama) - my, of me

(pronoun)

Genitive, singular of asmad

asmad - I, me (1st person pronoun)

च (ca) - and

(indeclinable)

एव (eva) - indeed, only, just

(indeclinable)

हि (hi) - indeed, surely, for

(indeclinable)

सारथ्यम् (sārathyam) - charioteering, the duty of a charioteer

(noun)

Accusative, neuter, singular of sārathya

sārathya - charioteering, the office or duty of a charioteer

Derived from 'sārathi' (charioteer) with the suffix -ya.

रथिनाम् (rathinām) - of charioteers, of warriors on chariots

(noun)

Genitive, masculine, plural of rathin

rathin - charioteer, warrior on a chariot, possessing a chariot

Derived from 'ratha' (chariot) with the suffix -in.

श्रेष्ठ (śreṣṭha) - O best, O most excellent

(adjective)

Vocative, masculine, singular of śreṣṭha

śreṣṭha - best, most excellent, superior

Superlative form of praśasya (excellent).

सुमनाः (sumanāḥ) - well-minded, benevolent, glad, joyful

(adjective)

Nominative, masculine, singular of sumanas

sumanas - good-minded, benevolent, glad, auspicious

Compound type : bahuvrīhi (su+manas)

• su – good, well, excellent
  indeclinable
• manas – mind, intellect, heart
  noun (neuter)
  Root: man (class 4)

कर्तुम् (kartum) - to do, to perform, to make

(indeclinable)

Infinitive

Infinitive form ending in -tum.

Root: kṛ (class 8)

अर्हसि (arhasi) - you ought, you are able, you are fit

(verb)

2nd person , singular, active, present (laṭ) of arh

present tense, 2nd person singular

Root: arh (class 1)