महाभारतः mahābhārataḥ - book-3, chapter-39, verse-21

दर्भचीरं निवस्याथ दण्डाजिनविभूषितः ।
पूर्णे पूर्णे त्रिरात्रे तु मासमेकं फलाशनः ।
द्विगुणेनैव कालेन द्वितीयं मासमत्यगात् ॥२१॥

21. darbhacīraṁ nivasyātha daṇḍājinavibhūṣitaḥ ,
pūrṇe pūrṇe trirātre tu māsamekaṁ phalāśanaḥ ,
dviguṇenaiva kālena dvitīyaṁ māsamatyagāt.

21. darbhacīram nivasya atha
daṇḍājinavibhūṣitaḥ pūrṇe pūrṇe trirātre
tu māsam ekam phalāśanaḥ dviguṇena
eva kālena dvitīyam māsam atyagāt

21. Then, having put on a garment of Darbha grass and adorned with a staff and deerskin, he subsisted on fruits for one month, doing so after every three nights. He passed the second month with a fasting period of twice that duration.

Words meanings summery:

• दर्भचीरम् (darbhacīram) - garment made of Darbha grass

• निवस्य (nivasya) - having put on, having worn

• अथ (atha) - then, next

• दण्डाजिनविभूषितः (daṇḍājinavibhūṣitaḥ) - adorned with a staff and deerskin

• पूर्णे (pūrṇe) - complete, full

• पूर्णे (pūrṇe) - each time a period was complete (complete, full)

• त्रिरात्रे (trirātre) - of three nights, a period of three nights

• तु (tu) - but, indeed, however

• मासम् (māsam) - month

• एकम् (ekam) - one, single

• फलाशनः (phalāśanaḥ) - eating fruits, subsisting on fruits

• द्विगुणेन (dviguṇena) - by twice (the amount), by double

• एव (eva) - only, indeed, just

• कालेन (kālena) - with twice that duration (by time, in time)

• द्वितीयम् (dvitīyam) - second

• मासम् (māsam) - month

• अत्यगात् (atyagāt) - he passed, he spent

Words meanings and morphology

दर्भचीरम् (darbhacīram) - garment made of Darbha grass

(noun)

Accusative, neuter, singular of darbhacīra

darbhacīra - garment made of Darbha grass

Compound type : tatpurusha (darbha+cīra)

• darbha – sacred grass (Poa cynosuroides)
  noun (masculine)
• cīra – strip of bark, garment, rag
  noun (neuter)

निवस्य (nivasya) - having put on, having worn

(indeclinable)

Absolutive

Formed with suffix -ya after prefix ni-

Prefix: ni

Root: vas (class 2)

अथ (atha) - then, next

(indeclinable)

दण्डाजिनविभूषितः (daṇḍājinavibhūṣitaḥ) - adorned with a staff and deerskin

(adjective)

Nominative, masculine, singular of daṇḍājinavibhūṣita

daṇḍājinavibhūṣita - adorned with a staff and deerskin

Compound type : bahuvrihi (daṇḍa+ajina+vibhūṣita)

• daṇḍa – staff, stick, rod
  noun (masculine)
• ajina – deerskin, hide
  noun (neuter)
• vibhūṣita – adorned, decorated, ornamented
  adjective (masculine)
  Past Passive Participle
  Prefix: vi
  Root: bhūṣ (class 10)

पूर्णे (pūrṇe) - complete, full

(adjective)

Locative, neuter, singular of pūrṇa

pūrṇa - complete, full, finished

Past Passive Participle

Root: pṝ (class 9)

पूर्णे (pūrṇe) - each time a period was complete (complete, full)

(adjective)

Locative, neuter, singular of pūrṇa

pūrṇa - complete, full, finished

Past Passive Participle

Root: pṝ (class 9)

त्रिरात्रे (trirātre) - of three nights, a period of three nights

(noun)

Locative, neuter, singular of trirātra

trirātra - a period of three nights

Compound type : dvigu (tri+rātra)

• tri – three
  numeral
• rātra – night
  noun (neuter)

तु (tu) - but, indeed, however

(indeclinable)

मासम् (māsam) - month

(noun)

Accusative, masculine, singular of māsa

māsa - month

एकम् (ekam) - one, single

(numeral)

फलाशनः (phalāśanaḥ) - eating fruits, subsisting on fruits

(adjective)

Nominative, masculine, singular of phalāśana

phalāśana - eating fruits, subsisting on fruits

Compound type : upapada tatpurusha (phala+āśana)

• phala – fruit, result, consequence
  noun (neuter)
• āśana – eating, food, act of eating
  noun (neuter)
  Kṛt suffix -ana
  Root: aś (class 5)

द्विगुणेन (dviguṇena) - by twice (the amount), by double

(adjective)

Instrumental, masculine, singular of dviguṇa

dviguṇa - double, twofold, twice as much

Compound type : dvigu (dvi+guṇa)

• dvi – two
  numeral
• guṇa – quality, multiple, factor
  noun (masculine)

एव (eva) - only, indeed, just

(indeclinable)

कालेन (kālena) - with twice that duration (by time, in time)

(noun)

Instrumental, masculine, singular of kāla

kāla - time, period, season

द्वितीयम् (dvitīyam) - second

(numeral)

मासम् (māsam) - month

(noun)

Accusative, masculine, singular of māsa

māsa - month

अत्यगात् (atyagāt) - he passed, he spent

(verb)

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

Prefix: ati

Root: gam (class 1)