महाभारतः mahābhārataḥ - book-2, chapter-57, verse-21

आशीविषान्नेत्रविषान्कोपयेन्न तु पण्डितः ।
एवं तेऽहं वदामीदं प्रयतः कुरुनन्दन ॥२१॥

21. āśīviṣānnetraviṣānkopayenna tu paṇḍitaḥ ,
evaṁ te'haṁ vadāmīdaṁ prayataḥ kurunandana.

21. āśīviṣān netraviṣān kopayet na tu paṇḍitaḥ |
evam te aham vadāmi idam prayataḥ kurunandana

21. A wise person should not provoke poisonous snakes (āśīviṣa) or those with venom in their eyes (netraviṣa). Thus, O delight of the Kurus, I diligently convey this to you.

Words meanings summery:

• आशीविषान् (āśīviṣān) - those whose poison is in their fangs (poisonous snakes, vipers)

• नेत्रविषान् (netraviṣān) - those whose poison is in their eyes (those with eye-poison)

• कोपयेत् (kopayet) - should provoke, should anger

• न (na) - not, no

• तु (tu) - but, indeed, on the other hand

• पण्डितः (paṇḍitaḥ) - a wise person, a scholar

• एवम् (evam) - thus, in this way

• ते (te) - to you (to you, of you)

• अहम् (aham) - I

• वदामि (vadāmi) - I speak, I say

• इदम् (idam) - this

• प्रयतः (prayataḥ) - diligent, careful, self-controlled

• कुरुनन्दन (kurunandana) - O delight of the Kurus (an epithet for Arjuna or Yudhishthira) (O delighter of the Kurus)

Words meanings and morphology

आशीविषान् (āśīviṣān) - those whose poison is in their fangs (poisonous snakes, vipers)

(noun)

Accusative, masculine, plural of āśīviṣa

āśīviṣa - a serpent whose poison is in its fangs, a viper

Compound type : bahuvrihi (āśī+viṣa)

• āśī – fang, tooth, mouth, blessing
  noun (feminine)
• viṣa – poison, venom
  noun (neuter)

नेत्रविषान् (netraviṣān) - those whose poison is in their eyes (those with eye-poison)

(noun)

Accusative, masculine, plural of netraviṣa

netraviṣa - a serpent whose poison is in its eyes

Compound type : bahuvrihi (netra+viṣa)

• netra – eye
  noun (neuter)
• viṣa – poison, venom
  noun (neuter)

कोपयेत् (kopayet) - should provoke, should anger

(verb)

3rd person , singular, active, optative (vidhi-liṅ) of kup

causative stem

Root: kup (class 4)

न (na) - not, no

(indeclinable)

तु (tu) - but, indeed, on the other hand

(indeclinable)

पण्डितः (paṇḍitaḥ) - a wise person, a scholar

(noun)

Nominative, masculine, singular of paṇḍita

paṇḍita - a wise man, scholar, learned person

एवम् (evam) - thus, in this way

(indeclinable)

ते (te) - to you (to you, of you)

(pronoun)

Dative, singular of yuṣmad

yuṣmad - you

अहम् (aham) - I

(pronoun)

Nominative, singular of asmad

asmad - I

वदामि (vadāmi) - I speak, I say

(verb)

1st person , singular, active, present (laṭ) of vad

Root: vad (class 1)

इदम् (idam) - this

(pronoun)

Accusative, neuter, singular of idam

idam - this, here

प्रयतः (prayataḥ) - diligent, careful, self-controlled

(adjective)

Nominative, masculine, singular of prayata

prayata - diligent, careful, self-controlled, pure

Past Passive Participle

from pra-yam

Prefix: pra

Root: yam (class 1)

कुरुनन्दन (kurunandana) - O delight of the Kurus (an epithet for Arjuna or Yudhishthira) (O delighter of the Kurus)

(proper noun)

Vocative, masculine, singular of kurunandana

kurunandana - delighter of the Kurus, a Kuru prince (epithet of Arjuna or Yudhishthira)

Compound type : tatpurusha (kuru+nandana)

• kuru – Kuru (name of an ancient king and his dynasty)
  proper noun (masculine)
• nandana – son, delight, causing joy
  noun (masculine)