महाभारतः mahābhārataḥ - book-5, chapter-89, verse-8

तत्र जाम्बूनदमयं पर्यङ्कं सुपरिष्कृतम् ।
विविधास्तरणास्तीर्णमभ्युपाविशदच्युतः ॥८॥

8. tatra jāmbūnadamayaṁ paryaṅkaṁ supariṣkṛtam ,
vividhāstaraṇāstīrṇamabhyupāviśadacyutaḥ.

8. tatra jāmbūnadamayam paryaṅkam supariṣkṛtam
vividhāstaraṇāstīrṇam abhyupāviśat acyutaḥ

8. There, Acyuta (Krishna) sat down upon a beautiful couch, made of Jambūnada gold and covered with various kinds of splendid coverings.

Words meanings summery:

• तत्र (tatra) - there, then

• जाम्बूनदमयम् (jāmbūnadamayam) - made of Jambūnada gold

• पर्यङ्कम् (paryaṅkam) - a couch, a sofa, a bed

• सुपरिष्कृतम् (supariṣkṛtam) - beautifully adorned, well-decorated

• विविधास्तरणास्तीर्णम् (vividhāstaraṇāstīrṇam) - covered with various kinds of coverings/bedding

• अभ्युपाविशत् (abhyupāviśat) - sat down upon

• अच्युतः (acyutaḥ) - Acyuta (Krishna, the unfailing one) (the unfailing, the unfallen)

Words meanings and morphology

तत्र (tatra) - there, then

(indeclinable)

जाम्बूनदमयम् (jāmbūnadamayam) - made of Jambūnada gold

(adjective)

Accusative, masculine, singular of jāmbūnadamaya

jāmbūnadamaya - made of Jambūnada (a kind of excellent gold)

Taddhita suffix 'maya' (made of).

Note: Qualifies 'paryaṅkam'. It matches the gender and case of the noun 'paryaṅkam' (treated as masculine in accusative singular).

पर्यङ्कम् (paryaṅkam) - a couch, a sofa, a bed

(noun)

Accusative, masculine, singular of paryaṅka

paryaṅka - couch, sofa, bedstead

Note: Object of 'abhyupāviśat'.

सुपरिष्कृतम् (supariṣkṛtam) - beautifully adorned, well-decorated

(adjective)

Accusative, masculine, singular of supariṣkṛta

supariṣkṛta - well-adorned, beautifully decorated, refined

Past Passive Participle

PPP of root 'kṛ' (to do) with upasargas 'su' and 'pari'.

Prefixes: su+pari

Root: kṛ (class 8)

Note: Qualifies 'paryaṅkam'.

विविधास्तरणास्तीर्णम् (vividhāstaraṇāstīrṇam) - covered with various kinds of coverings/bedding

(adjective)

Accusative, masculine, singular of vividhāstaraṇāstīrṇa

vividhāstaraṇāstīrṇa - covered with various coverings/spreads

Past Passive Participle in a compound

Bahuvrihi compound: 'vividha' (various) + 'āstaraṇa' (covering) + 'āstīrṇa' (spread over). 'āstīrṇa' is the PPP of 'stṛ'.

Compound type : bahuvrihi (vividha+āstaraṇa+āstīrṇa)

• vividha – various, diverse
  adjective
• āstaraṇa – covering, bed, mattress
  noun (neuter)
  From 'ā' + 'stṛ'.
  Prefix: ā
  Root: stṛ (class 5)
• āstīrṇa – spread out, covered
  verbal adjective
  Past Passive Participle
  PPP of root 'stṛ' with 'ā'.
  Prefix: ā
  Root: stṛ (class 5)

Note: Qualifies 'paryaṅkam'.

अभ्युपाविशत् (abhyupāviśat) - sat down upon

(verb)

3rd person , singular, active, imperfect past (laṅ) of abhyupaviś

Prefixes: abhi+upa+ā

Root: viś (class 6)

अच्युतः (acyutaḥ) - Acyuta (Krishna, the unfailing one) (the unfailing, the unfallen)

(proper noun)

Nominative, masculine, singular of acyuta

acyuta - the unfailing, the unfallen, a name for Vishnu/Krishna

Past Passive Participle with negative prefix

'a' (not) + 'cyuta' (fallen, failed). PPP of 'cyu' (to fall).

Compound type : nañ-tatpurusha (a+cyuta)

• a – not, un-
  indeclinable
  Negative prefix.
• cyuta – fallen, moved, failed
  verbal adjective
  Past Passive Participle
  PPP of root 'cyu'.
  Root: cyu (class 1)

Note: Subject of 'abhyupāviśat'.