महाभारतः mahābhārataḥ - book-3, chapter-43, verse-18

त्वयि प्रतिष्ठिते साधो रथस्थे स्थिरवाजिनि ।
पश्चादहमथारोक्ष्ये सुकृती सत्पथं यथा ॥१८॥

18. tvayi pratiṣṭhite sādho rathasthe sthiravājini ,
paścādahamathārokṣye sukṛtī satpathaṁ yathā.

18. tvayi pratiṣṭhite sādho rathasthe sthiravājini
paścāt aham atha ārokṣye sukṛtī satpatham yathā

18. O righteous one (sādho), when you are established in the chariot, with its steady horses, then I will ascend afterwards, just as a virtuous person (sukṛtī) ascends the true path (satpatham).

Words meanings summery:

• त्वयि (tvayi) - in you, on you, regarding you

• प्रतिष्ठिते (pratiṣṭhite) - being firmly seated/stationed (being established, having taken position, firmly placed)

• साधो (sādho) - O good one, O virtuous one, O righteous one

• रथस्थे (rathasthe) - seated in the chariot, being in the chariot

• स्थिरवाजिनि (sthiravājini) - on (the chariot) with steady horses

• पश्चात् (paścāt) - afterwards, behind, from behind

• अहम् (aham) - I

• अथ (atha) - then, now, thereupon

• आरोक्ष्ये (ārokṣye) - I shall ascend, I shall mount

• सुकृती (sukṛtī) - a virtuous person, a doer of good deeds

• सत्पथम् (satpatham) - the path of righteousness (the right path, the path of the good, the path of truth)

• यथा (yathā) - just as (just as, as, according to)

Words meanings and morphology

त्वयि (tvayi) - in you, on you, regarding you

(pronoun)

Locative, singular of yuṣmad

yuṣmad - you (singular)

Second person singular pronoun

प्रतिष्ठिते (pratiṣṭhite) - being firmly seated/stationed (being established, having taken position, firmly placed)

(adjective)

Locative, masculine, singular of pratiṣṭhita

pratiṣṭhita - established, firm, standing, fixed, consecrated

Past Passive Participle

From prati + root sthā (to stand).

Prefix: prati

Root: sthā (class 1)

साधो (sādho) - O good one, O virtuous one, O righteous one

(noun)

Vocative, masculine, singular of sādhu

sādhu - good, virtuous, righteous, holy man, sage

Root: sādh (class 5)

Note: Term of address.

रथस्थे (rathasthe) - seated in the chariot, being in the chariot

(adjective)

Locative, masculine, singular of rathastha

rathastha - standing or being in a chariot

Tatpuruṣa compound: ratha (chariot) + stha (standing/being).

Compound type : tatpuruṣa (ratha+stha)

• ratha – chariot, car, vehicle
  noun (masculine)
  Root: ram
• stha – standing, staying, being in
  adjective (masculine)
  From root sthā (to stand, be)
  Root: sthā (class 1)

स्थिरवाजिनि (sthiravājini) - on (the chariot) with steady horses

(adjective)

Locative, masculine, singular of sthiravājin

sthiravājin - having steady horses

Bahuvrīhi compound: sthira (steady) + vājin (horse).

Compound type : bahuvrīhi (sthira+vājin)

• sthira – steady, firm, constant, stable
  adjective (masculine)
  Root: sthā (class 1)
• vājin – horse, swift, strong
  noun (masculine)
  Root: vaj

पश्चात् (paścāt) - afterwards, behind, from behind

(indeclinable)

Adverb formed from paśca (back) + tasi (suffix).

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I

First person singular pronoun

Note: Refers to the speaker (Matali).

अथ (atha) - then, now, thereupon

(indeclinable)

Conjunction/Adverb

आरोक्ष्ये (ārokṣye) - I shall ascend, I shall mount

(verb)

1st person , singular, middle, future (lṛṭ) of ā-ruh

Future Tense (ātmanepada)

Root ruh (to grow, ascend) with prefix ā.

Prefix: ā

Root: ruh (class 1)

Note: Verb of the main clause.

सुकृती (sukṛtī) - a virtuous person, a doer of good deeds

(noun)

Nominative, masculine, singular of sukṛtin

sukṛtin - virtuous, righteous, doer of good deeds

Bahuvrīhi compound: su (good) + kṛtin (doer).

Compound type : bahuvrīhi (su+kṛtin)

• su – good, well, very, excellent
  indeclinable
  Prefix/Adverb
• kṛtin – doer, maker, successful, meritorious
  noun (masculine)
  From root kṛ (to do) + -in (suffix)
  Root: kṛ (class 8)

सत्पथम् (satpatham) - the path of righteousness (the right path, the path of the good, the path of truth)

(noun)

Accusative, masculine, singular of satpatha

satpatha - right path, good path, true path, path of the virtuous

Tatpuruṣa compound: sat (good, true) + patha (path).

Compound type : tatpuruṣa (sat+patha)

• sat – existent, good, true, real, virtuous
  adjective (masculine)
  Present Active Participle
  From root as (to be)
  Root: as (class 2)
• patha – path, road, way
  noun (masculine)

Note: Object of the implied action of ascending.

यथा (yathā) - just as (just as, as, according to)

(indeclinable)

Adverb/Conjunction