महाभारतः mahābhārataḥ - book-8, chapter-6, verse-7

पर्यङ्केषु परार्ध्येषु स्पर्ध्यास्तरणवत्सु च ।
वरासनेषूपविष्टाः सुखशय्यास्विवामराः ॥७॥

7. paryaṅkeṣu parārdhyeṣu spardhyāstaraṇavatsu ca ,
varāsaneṣūpaviṣṭāḥ sukhaśayyāsvivāmarāḥ.

7. paryaṅkeṣu parārdhyeṣu spardhyāstaraṇavatsu ca
varāsaneṣu upaviṣṭāḥ sukhaśayyāsu iva amarāḥ

7. upaviṣṭāḥ amarāḥ iva parārdhyeṣu spardhyāstaraṇavatsu
ca paryaṅkeṣu varāsaneṣu sukhaśayyāsu

7. They were seated on magnificent couches adorned with enviable coverings, and on excellent seats, like immortals resting on comfortable beds.

Words meanings summery:

• पर्यङ्केषु (paryaṅkeṣu) - on couches, on beds

• परार्ध्येषु (parārdhyeṣu) - on the most excellent, on the highest

• स्पर्ध्यास्तरणवत्सु (spardhyāstaraṇavatsu) - on those having enviable coverings

• च (ca) - and

• वरासनेषु (varāsaneṣu) - on excellent seats

• उपविष्टाः (upaviṣṭāḥ) - seated, sitting

• सुखशय्यासु (sukhaśayyāsu) - on comfortable beds

• इव (iva) - as if, like

• अमराः (amarāḥ) - immortals, gods

Words meanings and morphology

पर्यङ्केषु (paryaṅkeṣu) - on couches, on beds

(noun)

Locative, masculine, plural of paryaṅka

paryaṅka - couch, bed, sofa

From pari + añc (to bend, to go) -> that which is bent around, a couch.

Prefix: pari

Root: añc (class 5)

परार्ध्येषु (parārdhyeṣu) - on the most excellent, on the highest

(adjective)

Locative, masculine, plural of parārdhya

parārdhya - most excellent, highest, most precious, supreme

From para (other, superior) + ardha (half, part) or perhaps related to ardhya (valuable).

Note: Agrees with 'paryaṅkeṣu' and 'varāsaneṣu'.

स्पर्ध्यास्तरणवत्सु (spardhyāstaraṇavatsu) - on those having enviable coverings

(adjective)

Locative, masculine, plural of spardhyāstaraṇavat

spardhyāstaraṇavat - having desirable or splendid coverings/spreads

Possessive suffix -vat added to spardhyāstaraṇa.

Compound type : tatpurusha (spardhya+āstaraṇa)

• spardhya – desirable, enviable, worthy of emulation
  adjective (masculine)
  Gerundive/Future Passive Participle
  Derived from root spṛdh (to contend, vie) with suffix -ya.
  Root: spṛdh (class 1)
• āstaraṇa – covering, spread, carpet, mattress
  noun (neuter)
  Derived from ā-stṛ (to spread over).
  Prefix: ā
  Root: stṛ (class 5)

Note: Agrees with 'paryaṅkeṣu' and 'varāsaneṣu'.

च (ca) - and

(indeclinable)

वरासनेषु (varāsaneṣu) - on excellent seats

(noun)

Locative, neuter, plural of varāsana

varāsana - excellent seat, throne, superior posture

Compound type : karmadharaya (vara+āsana)

• vara – excellent, best, finest, boon
  adjective (masculine)
  Root: vṛ (class 9)
• āsana – seat, sitting, posture
  noun (neuter)
  Derived from root ās (to sit).
  Root: ās (class 2)

उपविष्टाः (upaviṣṭāḥ) - seated, sitting

(adjective)

Nominative, masculine, plural of upaviṣṭa

upaviṣṭa - seated, having sat down, present

Past Passive Participle

From upa-viś (to sit down).

Prefix: upa

Root: viś (class 6)

सुखशय्यासु (sukhaśayyāsu) - on comfortable beds

(noun)

Locative, feminine, plural of sukhaśayyā

sukhaśayyā - comfortable bed, soft bed

Compound type : karmadharaya (sukha+śayyā)

• sukha – comfort, happiness, ease
  noun (neuter)
• śayyā – bed, couch, sleep, lying down
  noun (feminine)
  Derived from root śī (to lie down).
  Root: śī (class 2)

इव (iva) - as if, like

(indeclinable)

अमराः (amarāḥ) - immortals, gods

(noun)

Nominative, masculine, plural of amara

amara - immortal, god, deity

A (not) + mara (mortal) from root mṛ (to die).

Compound type : navi_bahuvrihi (a+mara)

• a – not, non-, un-
  indeclinable
  negative prefix
• mara – mortal, death
  adjective (masculine)
  Derived from root mṛ (to die).
  Root: mṛ (class 6)

Note: Subject of the implied sentence.