महाभारतः mahābhārataḥ - book-9, chapter-61, verse-7

शिबिरं समनुप्राप्य कुरुराजस्य पाण्डवाः ।
अवतेरुर्महाराज रथेभ्यो रथसत्तमाः ॥७॥

7. śibiraṁ samanuprāpya kururājasya pāṇḍavāḥ ,
avaterurmahārāja rathebhyo rathasattamāḥ.

7. śibiram samanuprāpya kuru-rājasya pāṇḍavāḥ
avateruḥ mahārāja rathebhyaḥ ratha-sattamāḥ

7. O Great King, having arrived at the Kuru king's camp, the Pandavas, who were excellent charioteers, descended from their chariots.

Words meanings summery:

• शिबिरम् (śibiram) - camp, encampment

• समनुप्राप्य (samanuprāpya) - having reached, having attained

• कुरु-राजस्य (kuru-rājasya) - of Duryodhana, the Kuru king (of the Kuru king)

• पाण्डवाः (pāṇḍavāḥ) - the sons of Pāṇḍu, the Pandavas

• अवतेरुः (avateruḥ) - they descended, they alighted

• महाराज (mahārāja) - O Great King!

• रथेभ्यः (rathebhyaḥ) - from the chariots

• रथ-सत्तमाः (ratha-sattamāḥ) - the best of charioteers

Words meanings and morphology

शिबिरम् (śibiram) - camp, encampment

(noun)

Accusative, neuter, singular of śibira

śibira - camp, military encampment

समनुप्राप्य (samanuprāpya) - having reached, having attained

(indeclinable)

absolutive

Formed with 'lyap' suffix (preceded by prefixes).

Prefixes: sam+anu+pra

Root: āp (class 5)

कुरु-राजस्य (kuru-rājasya) - of Duryodhana, the Kuru king (of the Kuru king)

(noun)

Genitive, masculine, singular of kuru-rāja

kuru-rāja - king of the Kurus

Compound type : tatpuruṣa (kuru+rāja)

• kuru – Kuru (dynasty/people), a region
  proper noun (masculine)
• rājan – king, ruler
  noun (masculine)

पाण्डवाः (pāṇḍavāḥ) - the sons of Pāṇḍu, the Pandavas

(proper noun)

Nominative, masculine, plural of pāṇḍava

pāṇḍava - descendant of Pāṇḍu

अवतेरुः (avateruḥ) - they descended, they alighted

(verb)

3rd person , plural, active, Perfect (lit) of avatṛ

Prefix: ava

Root: tṛ (class 1)

महाराज (mahārāja) - O Great King!

(noun)

Vocative, masculine, singular of mahārājan

mahārājan - great king, emperor

रथेभ्यः (rathebhyaḥ) - from the chariots

(noun)

Ablative, masculine, plural of ratha

ratha - chariot

रथ-सत्तमाः (ratha-sattamāḥ) - the best of charioteers

(noun)

Nominative, masculine, plural of ratha-sattama

ratha-sattama - best of chariots/charioteers

Compound type : tatpuruṣa (ratha+sattama)

• ratha – chariot
  noun (masculine)
• sattama – best, most excellent
  adjective
  Superlative of 'sat' (good/existing).