महाभारतः mahābhārataḥ - book-12, chapter-172, verse-31

अपगतभयरागमोहदर्पो धृतिमतिबुद्धिसमन्वितः प्रशान्तः ।
उपगतफलभोगिनो निशाम्य व्रतमिदमाजगरं शुचिश्चरामि ॥३१॥

31. apagatabhayarāgamohadarpo; dhṛtimatibuddhisamanvitaḥ praśāntaḥ ,
upagataphalabhogino niśāmya; vratamidamājagaraṁ śuciścarāmi.

31. apagatabhayarāgamohadarpaḥ
dhṛtimatibuddhisamanvitaḥ praśāntaḥ
upagataphalabhoginaḥ niśāmya
vratam idam ājagaram śuciḥ carāmi

31. aham apagata-bhaya-rāga-moha-darpaḥ
dhṛti-mati-buddhi-samanvitaḥ
praśāntaḥ śuciḥ upagataphalabhoginaḥ
niśāmya idam ājagaram vratam carāmi

31. Having become free from fear, attachment (rāga), delusion (moha), and pride, and being endowed with fortitude, intelligence, and understanding, I am profoundly peaceful. Having observed those who enjoy the fruits of their actions, I, being pure, undertake this python-like vow.

Words meanings summery:

• अपगतभयरागमोहदर्पः (apagatabhayarāgamohadarpaḥ) - one from whom fear, attachment, delusion, and pride have departed; free from fear, attachment, delusion, and pride

• धृतिमतिबुद्धिसमन्वितः (dhṛtimatibuddhisamanvitaḥ) - endowed with fortitude, intelligence, and understanding

• प्रशान्तः (praśāntaḥ) - profoundly peaceful, tranquil, calm

• उपगतफलभोगिनः (upagataphalabhoginaḥ) - those who have obtained the enjoyment of fruits, those who partake of the fruits (of action)

• निशाम्य (niśāmya) - having seen, having observed, having perceived

• व्रतम् (vratam) - vow, observance, religious practice

• इदम् (idam) - this

• आजगरम् (ājagaram) - python-like, belonging to a python

• शुचिः (śuciḥ) - pure, clean, holy

• चरामि (carāmi) - I practice, I perform, I wander

Words meanings and morphology

अपगतभयरागमोहदर्पः (apagatabhayarāgamohadarpaḥ) - one from whom fear, attachment, delusion, and pride have departed; free from fear, attachment, delusion, and pride

(adjective)

Nominative, masculine, singular of apagatabhayarāgamohadarpa

apagatabhayarāgamohadarpa - one from whom fear, attachment, delusion, and pride have departed

Compound type : bahuvrīhi (apagata+bhaya+rāga+moha+darpa)

• apagata – departed, gone away, removed
  adjective (masculine)
  Past Passive Participle
  from apa-gam
  Prefix: apa
  Root: gam (class 1)
• bhaya – fear, dread
  noun (neuter)
• rāga – attachment, passion, color
  noun (masculine)
• moha – delusion, infatuation, bewilderment
  noun (masculine)
• darpa – pride, arrogance, haughtiness
  noun (masculine)

धृतिमतिबुद्धिसमन्वितः (dhṛtimatibuddhisamanvitaḥ) - endowed with fortitude, intelligence, and understanding

(adjective)

Nominative, masculine, singular of dhṛtimatibuddhisamanvita

dhṛtimatibuddhisamanvita - endowed with fortitude, intelligence, and understanding

Compound type : tatpuruṣa (dhṛti+mati+buddhi+samanvita)

• dhṛti – fortitude, firmness, patience
  noun (feminine)
• mati – thought, intelligence, opinion
  noun (feminine)
• buddhi – intellect, understanding, perception
  noun (feminine)
• samanvita – endowed with, possessed of, accompanied by
  adjective (masculine)
  Past Passive Participle
  from sam-anu-i
  Prefixes: sam+anu
  Root: i (class 2)

प्रशान्तः (praśāntaḥ) - profoundly peaceful, tranquil, calm

(adjective)

Nominative, masculine, singular of praśānta

praśānta - profoundly peaceful, tranquil, calm, composed

Past Passive Participle

from pra-śam

Prefix: pra

Root: śam (class 4)

उपगतफलभोगिनः (upagataphalabhoginaḥ) - those who have obtained the enjoyment of fruits, those who partake of the fruits (of action)

(adjective)

Accusative, masculine, plural of upagataphalabhogin

upagataphalabhogin - one who has obtained the enjoyment of fruits

Compound type : tatpuruṣa (upagata+phala+bhogin)

• upagata – obtained, approached, happened
  adjective (masculine)
  Past Passive Participle
  from upa-gam
  Prefix: upa
  Root: gam (class 1)
• phala – fruit, result, consequence
  noun (neuter)
• bhogin – one who enjoys, consumer, experiencer
  noun (masculine)
  agent noun with -in
  Root: bhuj (class 7)

निशाम्य (niśāmya) - having seen, having observed, having perceived

(indeclinable)

Absolutive

from ni-śam (causative)

Prefix: ni

Root: śam (class 4)

व्रतम् (vratam) - vow, observance, religious practice

(noun)

Accusative, neuter, singular of vrata

vrata - vow, observance, religious practice, rule

इदम् (idam) - this

(pronoun)

Accusative, neuter, singular of idam

idam - this, this one

आजगरम् (ājagaram) - python-like, belonging to a python

(adjective)

Accusative, neuter, singular of ājagara

ājagara - python-like, belonging to a python (from ajagara: python)

शुचिः (śuciḥ) - pure, clean, holy

(adjective)

Nominative, masculine, singular of śuci

śuci - pure, clean, holy, virtuous

चरामि (carāmi) - I practice, I perform, I wander

(verb)

1st person , singular, active, present indicative (laṭ) of car

Root: car (class 1)