महाभारतः mahābhārataḥ - book-5, chapter-123, verse-12

अनुतिष्ठ महाप्राज्ञ कृष्णभीष्मौ यदूचतुः ।
मा वचो लघुबुद्धीनां समास्थास्त्वं परंतप ॥१२॥

12. anutiṣṭha mahāprājña kṛṣṇabhīṣmau yadūcatuḥ ,
mā vaco laghubuddhīnāṁ samāsthāstvaṁ paraṁtapa.

12. anuthiṣṭha mahāprājña kṛṣṇabhīṣmau yat ūcatuḥ mā
vacaḥ laghubuddhīnām samāsthāḥ tvam paraṃtapa

12. O greatly wise one, act according to what Kṛṣṇa and Bhīṣma have advised. O tormentor of foes, do not rely on the words of those with shallow intellect.

Words meanings summery:

• अनुथिष्ठ (anuthiṣṭha) - act according to, follow, obey, carry out

• महाप्राज्ञ (mahāprājña) - O greatly wise one, O highly intelligent one

• कृष्णभीष्मौ (kṛṣṇabhīṣmau) - Kṛṣṇa and Bhīṣma

• यत् (yat) - what (as a relative pronoun introducing a clause) (which, what, that)

• ऊचतुः (ūcatuḥ) - they two said, spoke

• मा (mā) - not, don't

• वचः (vacaḥ) - words (of advice/opinion) (words, speech, statement)

• लघुबुद्धीनाम् (laghubuddhīnām) - of the small-minded, of those with shallow intellect

• समास्थाः (samāsthāḥ) - you relied, you trusted, you placed confidence in

• त्वम् (tvam) - you

• परंतप (paraṁtapa) - O tormentor of foes

Words meanings and morphology

अनुथिष्ठ (anuthiṣṭha) - act according to, follow, obey, carry out

(verb)

2nd person , singular, active, imperative (loṭ) of anuthiṣṭha

Imperative, 2nd person singular

From upasarga 'anu' and root 'sthā', class 1, Parasmaipada.

Prefix: anu

Root: sthā (class 1)

महाप्राज्ञ (mahāprājña) - O greatly wise one, O highly intelligent one

(adjective)

Vocative, masculine, singular of mahāprājña

mahāprājña - greatly wise, highly intelligent

Compound type : karmadhāraya (mahā+prājña)

• mahā – great, large
  adjective
• prājña – wise, intelligent
  adjective (masculine)
  Derived from 'pra' and root 'jñā' (to know well).
  Prefix: pra
  Root: jñā (class 9)

कृष्णभीष्मौ (kṛṣṇabhīṣmau) - Kṛṣṇa and Bhīṣma

(proper noun)

Nominative, masculine, dual of kṛṣṇabhīṣma

kṛṣṇabhīṣma - Kṛṣṇa and Bhīṣma (as a dvandva compound)

Compound type : dvandva (kṛṣṇa+bhīṣma)

• kṛṣṇa – Kṛṣṇa (name of a deity/person)
  proper noun (masculine)
• bhīṣma – Bhīṣma (name of a warrior)
  proper noun (masculine)

यत् (yat) - what (as a relative pronoun introducing a clause) (which, what, that)

(pronoun)

Nominative, neuter, singular of yad

yad - which, what, that

Note: Functions here as a relative pronoun introducing the clause 'what they two said.'

ऊचतुः (ūcatuḥ) - they two said, spoke

(verb)

3rd person , dual, active, perfect (liṭ) of vac

Perfect, 3rd person dual

From root 'vac' (class 2, Parasmaipada), irregular perfect forms.

Root: vac (class 2)

मा (mā) - not, don't

(indeclinable)

वचः (vacaḥ) - words (of advice/opinion) (words, speech, statement)

(noun)

Accusative, neuter, singular of vacas

vacas - word, speech, saying

Root: vac (class 2)

Note: Object of 'samāsthāḥ'.

लघुबुद्धीनाम् (laghubuddhīnām) - of the small-minded, of those with shallow intellect

(adjective)

Genitive, masculine, plural of laghubuddhi

laghubuddhi - shallow-minded, foolish, having small intellect

Compound type : bahuvrīhi (laghu+buddhi)

• laghu – small, light, trifling
  adjective
• buddhi – intellect, understanding, perception
  noun (feminine)
  Past Passive Participle
  From root 'budh' (to know, perceive)
  Root: budh (class 1)

Note: Modifies 'vacaḥ' indirectly, 'words of the small-minded'.

समास्थाः (samāsthāḥ) - you relied, you trusted, you placed confidence in

(verb)

2nd person , singular, middle, aorist (luṅ) of samāsthā

Aorist, 2nd person singular

From upasargas 'sam-ā' and root 'sthā', class 1, Ātmanepada. (Aorist form s-a-sthā-s). With 'mā' this form implies a prohibitive aorist.

Prefixes: sam+ā

Root: sthā (class 1)

Note: Used with 'mā' for prohibition.

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you (pronoun)

Note: Explicit subject for 'anuthiṣṭha' and 'samāsthāḥ'.

परंतप (paraṁtapa) - O tormentor of foes

(adjective)

Vocative, masculine, singular of paraṃtapa

paraṁtapa - tormenting foes, destroyer of enemies

Compound type : tatpuruṣa (param+tapa)

• param – enemy, foe
  noun (masculine)
• tapa – scorcher, tormentor (from tap, to heat/torment)
  noun (masculine)
  Agent noun from root 'tap'.
  Root: tap (class 1)