महाभारतः mahābhārataḥ - book-12, chapter-3, verse-30

यस्मान्मिथ्योपचरितो अस्त्रलोभादिह त्वया ।
तस्मादेतद्धि ते मूढ ब्रह्मास्त्रं प्रतिभास्यति ॥३०॥

30. yasmānmithyopacarito astralobhādiha tvayā ,
tasmādetaddhi te mūḍha brahmāstraṁ pratibhāsyati.

30. yasmāt mithyā upacaritaḥ astralobhāt iha tvayā
tasmāt etat hi te mūḍha brahmāstram pratibhāsyati

30. yasmāt tvayā iha astralobhāt mithyā upacaritaḥ
tasmāt he mūḍha etat brahmāstram te hi pratibhāsyati

30. Because you have deceptively served me here out of greed for weapons, therefore, O foolish one, this divine weapon will not manifest for you.

Words meanings summery:

• यस्मात् (yasmāt) - because, from which reason

• मिथ्या (mithyā) - falsely, untruly, deceptively

• उपचरितः (upacaritaḥ) - served (me) (served, treated, attended)

• अस्त्रलोभात् (astralobhāt) - motivated by greed for weapons (from greed for weapons)

• इह (iha) - here (in my presence) (here, in this place)

• त्वया (tvayā) - by Karṇa (by you)

• तस्मात् (tasmāt) - therefore, from that reason

• एतत् (etat) - this Brahmāstra (this)

• हि (hi) - emphatic particle (indeed, surely, for)

• ते (te) - to you, for you

• मूढ (mūḍha) - Addressing Karṇa as 'foolish' (O foolish one, stupid one)

• ब्रह्मास्त्रम् (brahmāstram) - the celestial weapon known as Brahmāstra (divine weapon, the weapon of Brahmā)

• प्रतिभास्यति (pratibhāsyati) - it will not manifest (implying failure to recall or use the weapon) (it will appear, it will manifest)

Words meanings and morphology

यस्मात् (yasmāt) - because, from which reason

(indeclinable)

मिथ्या (mithyā) - falsely, untruly, deceptively

(indeclinable)

उपचरितः (upacaritaḥ) - served (me) (served, treated, attended)

(adjective)

Nominative, masculine, singular of upacarita

car - to move, to act; with upa: to serve, attend, treat

Past Passive Participle

Derived from upa-√car

Prefix: upa

Root: car (class 1)

Note: Refers to the act of serving the Guru.

अस्त्रलोभात् (astralobhāt) - motivated by greed for weapons (from greed for weapons)

(noun)

Ablative, masculine, singular of astralobha

astralobha - greed for weapons

Compound type : tatpuruṣa (astra+lobha)

• astra – weapon, missile
  noun (neuter)
  Root: as
• lobha – greed, covetousness, desire
  noun (masculine)
  Root: lubh

इह (iha) - here (in my presence) (here, in this place)

(indeclinable)

त्वया (tvayā) - by Karṇa (by you)

(pronoun)

Instrumental, singular of yuṣmad

yuṣmad - you (singular/plural)

तस्मात् (tasmāt) - therefore, from that reason

(indeclinable)

एतत् (etat) - this Brahmāstra (this)

(pronoun)

Nominative, neuter, singular of etad

etad - this

Note: Refers to 'brahmāstram'.

हि (hi) - emphatic particle (indeed, surely, for)

(indeclinable)

ते (te) - to you, for you

(pronoun)

Dative, singular of yuṣmad

yuṣmad - you (singular/plural)

Note: Can also be genitive, here conveying 'for you' or 'to you'.

मूढ (mūḍha) - Addressing Karṇa as 'foolish' (O foolish one, stupid one)

(noun)

Vocative, masculine, singular of mūḍha

mūḍha - foolish, stupid, bewildered, ignorant

Past Passive Participle

Derived from √muh (to be bewildered, confused)

Root: muh

ब्रह्मास्त्रम् (brahmāstram) - the celestial weapon known as Brahmāstra (divine weapon, the weapon of Brahmā)

(noun)

Nominative, neuter, singular of brahmāstra

brahmāstra - the divine weapon of Brahmā

Compound type : tatpuruṣa (brahman+astra)

• brahman – Brahmā (the creator god); sacred essence
  noun (masculine)
• astra – weapon, missile
  noun (neuter)
  Root: as

प्रतिभास्यति (pratibhāsyati) - it will not manifest (implying failure to recall or use the weapon) (it will appear, it will manifest)

(verb)

3rd person , singular, active, future (lṛṭ) of pratibhās

Prefix: prati

Root: bhās (class 1)

Note: The meaning here implies 'not appear/not be effective' due to the curse, though 'na' is not explicitly present in the Sanskrit text.