महाभारतः mahābhārataḥ - book-13, chapter-126, verse-16

ततो नारायणं तेजो व्रतचर्येन्धनोत्थितम् ।
वक्त्रान्निःसृत्य कृष्णस्य वह्निरद्भुतकर्मणः ॥१६॥

16. tato nārāyaṇaṁ tejo vratacaryendhanotthitam ,
vaktrānniḥsṛtya kṛṣṇasya vahniradbhutakarmaṇaḥ.

16. tataḥ nārāyaṇam tejaḥ vratacaryendhanotthitam
vaktrāt niḥsṛtya kṛṣṇasya vahniḥ adbhutakarmaṇaḥ

16. tataḥ kṛṣṇasya adbhutakarmaṇaḥ vaktrāt niḥsṛtya
vratacaryendhanotthitam nārāyaṇam tejaḥ vahniḥ

16. Then, a Nārāyaṇa-like (nārāyaṇa) brilliance, a fire of wondrous deeds, emerged from Kṛṣṇa's mouth, having arisen from the fuel of his ascetic vows and observances.

Words meanings summery:

• ततः (tataḥ) - then, thence, afterwards

• नारायणम् (nārāyaṇam) - A brilliance characteristic of Nārāyaṇa (the deity) (Nārāyaṇa's, related to Nārāyaṇa, divine)

• तेजः (tejaḥ) - fiery energy, spiritual brilliance (brilliance, energy, splendor, fire)

• व्रतचर्येन्धनोत्थितम् (vratacaryendhanotthitam) - fueled by ascetic vows and observances (risen from the fuel of vows and observances)

• वक्त्रात् (vaktrāt) - from the mouth

• निःसृत्य (niḥsṛtya) - having emerged, having come out, having issued forth

• कृष्णस्य (kṛṣṇasya) - of Kṛṣṇa

• वह्निः (vahniḥ) - fire, god of fire (Agni)

• अद्भुतकर्मणः (adbhutakarmaṇaḥ) - of wonderful deeds, of marvelous actions

Words meanings and morphology

ततः (tataḥ) - then, thence, afterwards

(indeclinable)

Formed with tas suffix from tad.

नारायणम् (nārāyaṇam) - A brilliance characteristic of Nārāyaṇa (the deity) (Nārāyaṇa's, related to Nārāyaṇa, divine)

(adjective)

Nominative, neuter, singular of nārāyaṇa

nārāyaṇa - Nārāyaṇa (a name of Viṣṇu or Brahmā), belonging to Nārāyaṇa, divine, primeval

From nara (man, primeval being) + ayana (path, abode).

Note: Agrees with tejaḥ.

तेजः (tejaḥ) - fiery energy, spiritual brilliance (brilliance, energy, splendor, fire)

(noun)

Nominative, neuter, singular of tejas

tejas - brilliance, light, fire, energy, vigor, spiritual power

From root tij (to be sharp).

Root: tij (class 1)

व्रतचर्येन्धनोत्थितम् (vratacaryendhanotthitam) - fueled by ascetic vows and observances (risen from the fuel of vows and observances)

(adjective)

Nominative, neuter, singular of vratacaryendhanotthita

vratacaryendhanotthita - arisen from the fuel of the practice of vows

Compound.

Compound type : tatpurusha (vrata-caryā+indhana+utthita)

• vrata-caryā – performance of vows, observance of religious duties
  noun (feminine)
  Compound of vrata and caryā.
• indhana – fuel, kindling
  noun (neuter)
  From root indh (to kindle).
  Root: indh (class 7)
• utthita – risen, stood up, produced, appeared
  adjective
  Past Passive Participle
  From prefix ut + root sthā (to stand) + suffix kta.
  Prefix: ut
  Root: sthā (class 1)

Note: Agrees with tejaḥ.

वक्त्रात् (vaktrāt) - from the mouth

(noun)

Ablative, neuter, singular of vaktra

vaktra - mouth, face, snout, front part

From root vac (to speak).

Root: vac (class 2)

निःसृत्य (niḥsṛtya) - having emerged, having come out, having issued forth

(indeclinable)

gerund/absolutive

From prefix nis + root sṛ (to move, flow) + suffix lyap.

Prefix: nis

Root: sṛ (class 1)

कृष्णस्य (kṛṣṇasya) - of Kṛṣṇa

(proper noun)

Genitive, masculine, singular of kṛṣṇa

kṛṣṇa - Kṛṣṇa (proper noun), black, dark, dark-blue

वह्निः (vahniḥ) - fire, god of fire (Agni)

(noun)

Nominative, masculine, singular of vahni

vahni - fire, flame, Agni (god of fire)

From root vah (to carry).

Root: vah (class 1)

Note: Subject of niḥsṛtya (implied abhavat or similar for verb).

अद्भुतकर्मणः (adbhutakarmaṇaḥ) - of wonderful deeds, of marvelous actions

(adjective)

Genitive, masculine, singular of adbhutakarman

adbhutakarman - one whose deeds are wonderful, performer of marvelous acts

Compound.

Compound type : bahuvrīhi (adbhuta+karman)

• adbhuta – wonderful, marvelous, astonishing
  adjective
• karman – action, deed, work, ritual action
  noun (neuter)
  From root kṛ (to do).
  Root: kṛ (class 8)

Note: Agrees with kṛṣṇasya.