महाभारतः mahābhārataḥ - book-5, chapter-159, verse-10

युधिष्ठिरनियोगात्तु फल्गुनस्य महात्मनः ।
करिष्ये युध्यमानस्य सारथ्यं विदितात्मनः ॥१०॥

10. yudhiṣṭhiraniyogāttu phalgunasya mahātmanaḥ ,
kariṣye yudhyamānasya sārathyaṁ viditātmanaḥ.

10. yudhiṣṭhiranīyogāt tu phālgunasya mahātmanaḥ
kariṣye yudhyamānasya sāratyaṃ viditātmanaḥ

10. yudhiṣṭhiranīyogāt tu mahātmanaḥ viditātmanaḥ
yudhyamānasya phālgunasya sāratyaṃ kariṣye

10. Indeed, by the command of Yudhiṣṭhira, I will act as charioteer for the great-souled Arjuna (Phalguna), who is fighting and knows his true self (ātman).

Words meanings summery:

• युधिष्ठिरनीयोगात् (yudhiṣṭhiranīyogāt) - from the command of Yudhiṣṭhira, by the instruction of Yudhiṣṭhira

• तु (tu) - indeed (but, indeed, yet)

• फाल्गुनस्य (phālgunasya) - of Arjuna, of Phalguna

• महात्मनः (mahātmanaḥ) - of the great-souled one, of the noble one

• करिष्ये (kariṣye) - I will do, I will perform

• युध्यमानस्य (yudhyamānasya) - of the one who is fighting, of the fighting one

• सारत्यम् (sāratyam) - charioteership, the act of being a charioteer

• विदितात्मनः (viditātmanaḥ) - of the one who knows the self, of the one whose self is known

Words meanings and morphology

युधिष्ठिरनीयोगात् (yudhiṣṭhiranīyogāt) - from the command of Yudhiṣṭhira, by the instruction of Yudhiṣṭhira

(noun)

Ablative, masculine, singular of yudhiṣṭhiranīyoga

yudhiṣṭhiranīyoga - command of Yudhiṣṭhira, instruction of Yudhiṣṭhira

Compound type : tatpuruṣa (yudhiṣṭhira+nīyoga)

• yudhiṣṭhira – steadfast in battle; proper name of the eldest Pāṇḍava brother
  proper noun (masculine)
• nīyoga – command, instruction, appointment
  noun (masculine)
  Prefix: ni
  Root: yuj (class 7)

तु (tu) - indeed (but, indeed, yet)

(indeclinable)

फाल्गुनस्य (phālgunasya) - of Arjuna, of Phalguna

(proper noun)

Genitive, masculine, singular of phālguna

phālguna - born under the star Phālgunī; an epithet of Arjuna

महात्मनः (mahātmanaḥ) - of the great-souled one, of the noble one

(adjective)

Genitive, masculine, singular of mahātman

mahātman - great-souled, magnanimous, noble-minded (from mahat + ātman)

Compound type : bahuvrīhi (mahat+ātman)

• mahat – great, large, important
  adjective (neuter)
• ātman – self, soul, spirit, essence
  noun (masculine)

Note: Agrees with Phalguna.

करिष्ये (kariṣye) - I will do, I will perform

(verb)

1st person , singular, middle, future (lṛṭ) of kṛ

Future tense, middle voice, 1st person singular

Derived from root kṛ, future stem kariṣya-

Root: kṛ (class 8)

युध्यमानस्य (yudhyamānasya) - of the one who is fighting, of the fighting one

(participle)

Genitive, masculine, singular of yudhyamāna

yudhyamāna - fighting, engaged in battle

Present Middle Participle

Derived from root yudh (to fight) with the suffix -māna.

Root: yudh (class 4)

Note: Agrees with Phalguna.

सारत्यम् (sāratyam) - charioteership, the act of being a charioteer

(noun)

Accusative, neuter, singular of sāratya

sāratya - charioteership, the office or duty of a charioteer

Derived from sarathi (charioteer) + -ya (taddhita suffix for abstract noun)

Note: Object of 'kariṣye'.

विदितात्मनः (viditātmanaḥ) - of the one who knows the self, of the one whose self is known

(adjective)

Genitive, masculine, singular of viditātman

viditātman - one who knows the self (ātman), one whose self is known

Compound of vidita (known, understood, past passive participle of vid) and ātman (self).

Compound type : bahuvrīhi (vidita+ātman)

• vidita – known, understood, perceived
  participle (neuter)
  Past Passive Participle
  Derived from root vid (to know).
  Root: vid (class 2)
• ātman – self, soul, spirit, essence
  noun (masculine)

Note: Agrees with Phalguna.