महाभारतः mahābhārataḥ - book-13, chapter-53, verse-21

वस्त्रैः शुभैरवच्छाद्य भोजनोपस्करैः सह ।
सर्वमादीपयामास च्यवनो भृगुनन्दनः ॥२१॥

21. vastraiḥ śubhairavacchādya bhojanopaskaraiḥ saha ,
sarvamādīpayāmāsa cyavano bhṛgunandanaḥ.

21. vastraiḥ śubhaiḥ avacchādya bhojanopaskaraiḥ
saha sarvam ādīpayāmāsa cyavanaḥ bhṛgunandanaḥ

21. bhṛgunandanaḥ cyavanaḥ śubhaiḥ vastraiḥ
bhojanopaskaraiḥ saha sarvam avacchādya ādīpayāmāsa

21. Having covered all those items with auspicious garments, along with the food preparations and utensils, Cyavana, the descendant of Bhrigu, then set everything on fire.

Words meanings summery:

• वस्त्रैः (vastraiḥ) - with garments (with clothes, with garments)

• शुभैः (śubhaiḥ) - with auspicious (with auspicious, with beautiful, with pure)

• अवच्छाद्य (avacchādya) - having covered (having covered, having concealed)

• भोजनोपस्करैः (bhojanopaskaraiḥ) - with food preparations and utensils (with food preparations, with food accessories/utensils)

• सह (saha) - along with (with, together with)

• सर्वम् (sarvam) - everything (referring to the collected items, bedding, seats, etc.) (all, whole, entire)

• आदीपयामास (ādīpayāmāsa) - he set on fire (he caused to be lit, he set on fire, he burnt)

• च्यवनः (cyavanaḥ) - Cyavana (the sage) (Cyavana)

• भृगुनन्दनः (bhṛgunandanaḥ) - the descendant of Bhrigu (descendant of Bhrigu, son of Bhrigu)

Words meanings and morphology

वस्त्रैः (vastraiḥ) - with garments (with clothes, with garments)

(noun)

Instrumental, neuter, plural of vastra

vastra - cloth, garment, dress, apparel

शुभैः (śubhaiḥ) - with auspicious (with auspicious, with beautiful, with pure)

(adjective)

Instrumental, neuter, plural of śubha

śubha - auspicious, beautiful, bright, pure, splendid

Note: Agrees with vastraiḥ

अवच्छाद्य (avacchādya) - having covered (having covered, having concealed)

(indeclinable)

Absolutive/Gerund

Absolutive form of root chad (to cover) with prefix ava

Prefix: ava

Root: chad (class 10)

भोजनोपस्करैः (bhojanopaskaraiḥ) - with food preparations and utensils (with food preparations, with food accessories/utensils)

(noun)

Instrumental, masculine, plural of bhojanopaskara

bhojanopaskara - food preparations, accessories for food, culinary utensils

Compound type : tatpurusha (bhojana+upaskara)

• bhojana – eating, food, meal
  noun (neuter)
• upaskara – accessory, implement, utensil, preparation
  noun (masculine)

सह (saha) - along with (with, together with)

(indeclinable)

सर्वम् (sarvam) - everything (referring to the collected items, bedding, seats, etc.) (all, whole, entire)

(pronoun)

Accusative, neuter, singular of sarva

sarva - all, every, whole, entire

आदीपयामास (ādīpayāmāsa) - he set on fire (he caused to be lit, he set on fire, he burnt)

(verb)

3rd person , singular, active, perfect (lit) of ādīpay

Causative

Causative form of root dīp (to shine) with prefix ā

Prefix: ā

Root: dīp (class 4)

च्यवनः (cyavanaḥ) - Cyavana (the sage) (Cyavana)

(proper noun)

Nominative, masculine, singular of cyavana

cyavana - Cyavana (name of a powerful ancient sage)

भृगुनन्दनः (bhṛgunandanaḥ) - the descendant of Bhrigu (descendant of Bhrigu, son of Bhrigu)

(proper noun)

Nominative, masculine, singular of bhṛgunandana

bhṛgunandana - descendant or son of Bhrigu

Compound type : tatpurusha (bhṛgu+nandana)

• bhṛgu – Bhrigu (name of a powerful ancient sage, progenitor of a priestly lineage)
  proper noun (masculine)
• nandana – son, delighting, gladdening
  noun/adjective (masculine)
  Derived from root nand (to rejoice, be glad)
  Root: nand (class 1)