महाभारतः mahābhārataḥ - book-3, chapter-206, verse-16

अनिष्टसंप्रयोगाच्च विप्रयोगात्प्रियस्य च ।
मानुषा मानसैर्दुःखैर्युज्यन्ते अल्पबुद्धयः ॥१६॥

16. aniṣṭasaṁprayogācca viprayogātpriyasya ca ,
mānuṣā mānasairduḥkhairyujyante alpabuddhayaḥ.

16. aniṣṭasamprayogāt ca viprayogāt priyasya ca
mānuṣāḥ mānasaiḥ duḥkhaiḥ yujyante alpabuddhayaḥ

16. People of little intelligence are afflicted by mental sufferings due to association with undesirable things and separation from dear ones.

Words meanings summery:

• अनिष्टसम्प्रयोगात् (aniṣṭasamprayogāt) - from contact with the undesirable, from association with what is not wished for

• च (ca) - and

• विप्रयोगात् (viprayogāt) - from separation

• प्रियस्य (priyasya) - of the dear one, of what is beloved

• च (ca) - and

• मानुषाः (mānuṣāḥ) - people, human beings

• मानसैः (mānasaiḥ) - by mental, by inner

• दुःखैः (duḥkhaiḥ) - by sufferings, by sorrows

• युज्यन्ते (yujyante) - they are joined, they are afflicted

• अल्पबुद्धयः (alpabuddhayaḥ) - those of little intelligence, those with dull minds

Words meanings and morphology

अनिष्टसम्प्रयोगात् (aniṣṭasamprayogāt) - from contact with the undesirable, from association with what is not wished for

(noun)

Ablative, masculine, singular of aniṣṭasamprayoga

aniṣṭasamprayoga - association with what is undesirable

Compound type : tatpuruṣa (aniṣṭa+samprayoga)

• aniṣṭa – undesirable, unwelcome, not wished for
  adjective (neuter)
  Prefix: an
• samprayoga – contact, association, union, conjunction
  noun (masculine)
  Prefixes: sam+pra
  Root: yuj (class 7)

च (ca) - and

(indeclinable)

विप्रयोगात् (viprayogāt) - from separation

(noun)

Ablative, masculine, singular of viprayoga

viprayoga - separation, disunion

Prefixes: vi+pra

Root: yuj (class 7)

प्रियस्य (priyasya) - of the dear one, of what is beloved

(adjective)

Genitive, masculine, singular of priya

priya - dear, beloved, favorite; a dear one

च (ca) - and

(indeclinable)

मानुषाः (mānuṣāḥ) - people, human beings

(noun)

Nominative, masculine, plural of mānuṣa

mānuṣa - human, relating to man; a human being, person

मानसैः (mānasaiḥ) - by mental, by inner

(adjective)

Instrumental, neuter, plural of mānasa

mānasa - mental, of the mind, inner

Root: man (class 4)

दुःखैः (duḥkhaiḥ) - by sufferings, by sorrows

(noun)

Instrumental, neuter, plural of duḥkha

duḥkha - suffering, pain, sorrow, misery, difficulty

युज्यन्ते (yujyante) - they are joined, they are afflicted

(verb)

3rd person , plural, passive, present (laṭ) of yuj

Root: yuj (class 7)

अल्पबुद्धयः (alpabuddhayaḥ) - those of little intelligence, those with dull minds

(adjective)

Nominative, masculine, plural of alpabuddhi

alpabuddhi - one with little intelligence, foolish

Compound type : bahuvrīhi (alpa+buddhi)

• alpa – little, small, few
  adjective (neuter)
• buddhi – intellect, understanding, discernment
  noun (feminine)
  Root: budh (class 1)