महाभारतः mahābhārataḥ - book-5, chapter-78, verse-9

निवृत्तवनवासान्नः श्रुत्वा वीर समागताः ।
अक्षौहिण्यो हि सप्तेमास्त्वत्प्रसादाज्जनार्दन ॥९॥

9. nivṛttavanavāsānnaḥ śrutvā vīra samāgatāḥ ,
akṣauhiṇyo hi saptemāstvatprasādājjanārdana.

9. nivṛttavanavāsān naḥ śrutvā vīra samāgatāḥ
akṣauhiṇyaḥ hi sapta imāḥ tvatprasādāt janārdana

9. Having heard that our forest exile is over, O hero, these seven akṣauhiṇīs (military divisions) have indeed gathered, O Janārdana, by your grace (prasāda).

Words meanings summery:

• निवृत्तवनवासान् (nivṛttavanavāsān) - referring to the Pāṇḍavas, whose period of living in the forest is over (whose forest exile has ended)

• नः (naḥ) - of us, our

• श्रुत्वा (śrutvā) - having heard

• वीर (vīra) - O Dhṛtarāṣṭra (addressed by Sañjaya) (O hero)

• समागताः (samāgatāḥ) - assembled, gathered, come together

• अक्षौहिण्यः (akṣauhiṇyaḥ) - military divisions (akṣauhiṇīs)

• हि (hi) - indeed, surely, for

• सप्त (sapta) - seven

• इमाः (imāḥ) - these

• त्वत्प्रसादात् (tvatprasādāt) - by the grace (prasāda) of Dhṛtarāṣṭra (from your grace, by your favor)

• जनार्दन (janārdana) - O Kṛṣṇa (addressed by Sañjaya) (O Janārdana (a name of Kṛṣṇa))

Words meanings and morphology

निवृत्तवनवासान् (nivṛttavanavāsān) - referring to the Pāṇḍavas, whose period of living in the forest is over (whose forest exile has ended)

(adjective)

Accusative, masculine, plural of nivṛttavanavāsa

nivṛttavanavāsa - whose forest-dwelling has ceased, whose exile is over

Compound type : bahuvrihi (nivṛtta+vanavāsa)

• nivṛtta – ceased, returned, finished
  adjective (masculine)
  Past Passive Participle
  Derived from verb root vṛt (to be, to turn) with prefix ni-
  Prefix: ni
  Root: vṛt (class 1)
• vanavāsa – living in the forest, forest exile
  noun (masculine)

नः (naḥ) - of us, our

(pronoun)

Genitive, plural of asmad

asmad - I, we, my, our

श्रुत्वा (śrutvā) - having heard

(indeclinable)

Gerund

Derived from verb root śru (to hear)

Root: śru (class 5)

वीर (vīra) - O Dhṛtarāṣṭra (addressed by Sañjaya) (O hero)

(noun)

Vocative, masculine, singular of vīra

vīra - hero, brave man, warrior

समागताः (samāgatāḥ) - assembled, gathered, come together

(adjective)

Nominative, masculine, plural of samāgata

samāgata - come together, assembled, arrived

Past Passive Participle

Derived from verb root gam (to go) with prefixes sam- and ā-

Prefixes: sam+ā

Root: gam (class 1)

अक्षौहिण्यः (akṣauhiṇyaḥ) - military divisions (akṣauhiṇīs)

(noun)

Nominative, feminine, plural of akṣauhiṇī

akṣauhiṇī - an akṣauhiṇī (a large army division consisting of 21,870 chariots, 21,870 elephants, 65,610 horses, and 109,350 foot soldiers)

हि (hi) - indeed, surely, for

(indeclinable)

सप्त (sapta) - seven

(numeral)

इमाः (imāḥ) - these

(pronoun)

Nominative, feminine, plural of idam

idam - this, these

त्वत्प्रसादात् (tvatprasādāt) - by the grace (prasāda) of Dhṛtarāṣṭra (from your grace, by your favor)

(noun)

Ablative, masculine, singular of tvatprasāda

tvatprasāda - your grace, your favor

Compound type : tatpurusha (tvat+prasāda)

• tvat – you (ablative singular form of yuṣmad), your
  pronoun
• prasāda – grace, favor, clearness, serenity
  noun (masculine)

जनार्दन (janārdana) - O Kṛṣṇa (addressed by Sañjaya) (O Janārdana (a name of Kṛṣṇa))

(proper noun)

Vocative, masculine, singular of janārdana

janārdana - Janārdana (name of Viṣṇu/Kṛṣṇa, meaning 'agitator of men' or 'punisher of evil men')