महाभारतः mahābhārataḥ - book-5, chapter-39, verse-35

दुर्बुद्धिमकृतप्रज्ञं छन्नं कूपं तृणैरिव ।
विवर्जयीत मेधावी तस्मिन्मैत्री प्रणश्यति ॥३५॥

35. durbuddhimakṛtaprajñaṁ channaṁ kūpaṁ tṛṇairiva ,
vivarjayīta medhāvī tasminmaitrī praṇaśyati.

35. durbuddhiṃ akṛtaprajñaṃ channaṃ kūpaṃ tṛṇaiḥ
iva vivarjayīta medhāvī tasmin maitrī praṇaśyati

35. A discerning person (medhāvin) should avoid those who are foolish (durbuddhi) and unwise (akṛtaprajña), just like one avoids a well hidden by grass. Friendship (maitrī) with such a person quickly perishes.

Words meanings summery:

• दुर्बुद्धिं (durbuddhiṁ) - a foolish person (durbuddhi) (foolish, evil-minded, ignorant)

• अकृतप्रज्ञं (akṛtaprajñaṁ) - an unwise person (akṛtaprajña) (unwise, whose wisdom is not developed, inexperienced)

• छन्नं (channaṁ) - covered, hidden (covered, concealed, hidden)

• कूपं (kūpaṁ) - a well (well, pit, cave)

• तृणैः (tṛṇaiḥ) - by grass (by grasses, by straws)

• इव (iva) - like, as, as if

• विवर्जयीत (vivarjayīta) - one should avoid, one should abandon, one should exclude

• मेधावी (medhāvī) - a discerning person (medhāvin) (intelligent, wise, discerning person)

• तस्मिन् (tasmin) - with such a person (in him, in that, with him)

• मैत्री (maitrī) - friendship (maitrī) (friendship, friendliness)

• प्रणश्यति (praṇaśyati) - perishes (perishes, is lost, disappears)

Words meanings and morphology

दुर्बुद्धिं (durbuddhiṁ) - a foolish person (durbuddhi) (foolish, evil-minded, ignorant)

(adjective)

Accusative, masculine, singular of durbuddhi

durbuddhi - foolish, evil-minded, wicked, ignorant

Compound type : bahuvrihi (dur+buddhi)

• dur – bad, difficult, ill
  prefix
• buddhi – intellect, understanding, wisdom, mind
  noun (feminine)
  from √budh (to know, understand)
  Root: budh (class 1)

अकृतप्रज्ञं (akṛtaprajñaṁ) - an unwise person (akṛtaprajña) (unwise, whose wisdom is not developed, inexperienced)

(adjective)

Accusative, masculine, singular of akṛtaprajña

akṛtaprajña - unwise, not intelligent, whose wisdom is not cultivated

Compound type : bahuvrihi (a+kṛta+prajñā)

• a – not, non-
  indeclinable
  negating prefix
• kṛta – done, made, performed, cultivated
  adjective (neuter)
  Past Passive Participle
  from root √kṛ (to do, make)
  Root: kṛ (class 8)
• prajñā – wisdom, insight, intelligence
  noun (feminine)
  Prefix: pra
  Root: jñā (class 9)

छन्नं (channaṁ) - covered, hidden (covered, concealed, hidden)

(adjective)

Accusative, neuter, singular of channa

channa - covered, concealed, hidden, disguised

Past Passive Participle

from root √chad (to cover)

Root: chad (class 1)

कूपं (kūpaṁ) - a well (well, pit, cave)

(noun)

Accusative, masculine, singular of kūpa

kūpa - well, pit, cavity, hole

तृणैः (tṛṇaiḥ) - by grass (by grasses, by straws)

(noun)

Instrumental, neuter, plural of tṛṇa

tṛṇa - grass, straw, blade of grass, any small plant

इव (iva) - like, as, as if

(indeclinable)

विवर्जयीत (vivarjayīta) - one should avoid, one should abandon, one should exclude

(verb)

3rd person , singular, ātmanepada, optative (liṅ) of vi-vṛj

Causative stem + Optative mood

Prefix: vi

Root: vṛj (class 1)

मेधावी (medhāvī) - a discerning person (medhāvin) (intelligent, wise, discerning person)

(adjective)

Nominative, masculine, singular of medhāvin

medhāvin - intelligent, wise, sagacious, discerning person

Possessive adjective from medhā (intellect)

Note: Used as a noun here.

तस्मिन् (tasmin) - with such a person (in him, in that, with him)

(pronoun)

Locative, masculine, singular of tad

tad - that, he, she, it, those

मैत्री (maitrī) - friendship (maitrī) (friendship, friendliness)

(noun)

Nominative, feminine, singular of maitrī

maitrī - friendship, friendliness, goodwill, benevolence

Derived from mitra (friend)

प्रणश्यति (praṇaśyati) - perishes (perishes, is lost, disappears)

(verb)

3rd person , singular, active, present (lat) of pra-naś

Prefix: pra

Root: naś (class 4)