महाभारतः mahābhārataḥ - book-12, chapter-328, verse-49

वेदानवाप्य चतुरः साङ्गोपाङ्गान्सनातनान् ।
प्रयोजयामास तदा नाम गुह्यमिदं मम ॥४९॥

49. vedānavāpya caturaḥ sāṅgopāṅgānsanātanān ,
prayojayāmāsa tadā nāma guhyamidaṁ mama.

49. vedān avāpya caturaḥ sāṅgopāṅgān sanātanān
prayojayāmāsa tadā nāma guhyam idam mama

49. caturaḥ sanātanān sāṅgopāṅgān vedān avāpya
tadā mama idaṃ guhyam nāma prayojayāmāsa

49. Having obtained the four eternal Vedas, complete with their auxiliary sciences and sub-auxiliary sciences, he then employed this secret name of mine.

Words meanings summery:

• वेदान् (vedān) - the Vedas

• अवाप्य (avāpya) - having obtained, having reached

• चतुरः (caturaḥ) - four

• साङ्गोपाङ्गान् (sāṅgopāṅgān) - with their aṅgas (auxiliary sciences) and upāṅgas (sub-auxiliary sciences)

• सनातनान् (sanātanān) - eternal, ancient, everlasting

• प्रयोजयामास (prayojayāmāsa) - he employed, caused to be used, applied

• तदा (tadā) - then, at that time

• नाम (nāma) - name, appellation

• गुह्यम् (guhyam) - secret, hidden, mysterious

• इदम् (idam) - this

• मम (mama) - my, of mine

Words meanings and morphology

वेदान् (vedān) - the Vedas

(noun)

Accusative, masculine, plural of veda

veda - Veda, sacred knowledge, knowledge

Root: vid (class 2)

अवाप्य (avāpya) - having obtained, having reached

(verbal derivative)

चतुरः (caturaḥ) - four

(numeral)

साङ्गोपाङ्गान् (sāṅgopāṅgān) - with their aṅgas (auxiliary sciences) and upāṅgas (sub-auxiliary sciences)

(adjective)

Accusative, masculine, plural of sāṅgopāṅga

sāṅgopāṅga - with auxiliary and sub-auxiliary sciences (referring to the Vedas)

Compound type : bahuvrīhi (sa+aṅga+upa-aṅga)

• sa – with, together with
  indeclinable
• aṅga – limb, part, auxiliary science (of the Vedas)
  noun (neuter)
• upa-aṅga – sub-limb, sub-division, secondary auxiliary science
  noun (neuter)
  Prefix: upa

सनातनान् (sanātanān) - eternal, ancient, everlasting

(adjective)

Accusative, masculine, plural of sanātana

sanātana - eternal, perpetual, ancient, primeval

प्रयोजयामास (prayojayāmāsa) - he employed, caused to be used, applied

(verb)

3rd person , singular, active, perfect (lit) of pra-yuj

causative, perfect tense

Causative stem of root 'yuj' with prefix 'pra', conjugated in the perfect tense (lit) 3rd person singular active.

Prefix: pra

Root: yuj (class 7)

तदा (tadā) - then, at that time

(indeclinable)

नाम (nāma) - name, appellation

(noun)

Accusative, neuter, singular of nāman

nāman - name, appellation, noun

गुह्यम् (guhyam) - secret, hidden, mysterious

(adjective)

Accusative, neuter, singular of guhya

guhya - secret, hidden, mysterious, to be concealed

Derived from root 'guh' (to hide) as a gerundive/adjective.

Root: guh (class 1)

इदम् (idam) - this

(pronoun)

Accusative, neuter, singular of idam

idam - this, this here

मम (mama) - my, of mine

(pronoun)

Genitive, singular of asmad

asmad - I, we