महाभारतः mahābhārataḥ - book-12, chapter-215, verse-20

अनिष्टस्याभिनिर्वृत्तिमिष्टसंवृत्तिमेव च ।
अप्रयत्नेन पश्यामः केषांचित्तत्स्वभावतः ॥२०॥

20. aniṣṭasyābhinirvṛttimiṣṭasaṁvṛttimeva ca ,
aprayatnena paśyāmaḥ keṣāṁcittatsvabhāvataḥ.

20. aniṣṭasya abhinirvṛttim iṣṭasaṃvṛttim eva ca
aprayatnena paśyāmaḥ keṣāṃcit tat svabhāvataḥ

20. ca keṣāṃcit aniṣṭasya abhinirvṛttim eva
iṣṭasaṃvṛttim aprayatnena tat svabhāvataḥ paśyāmaḥ

20. We observe that for some, the occurrence of undesirable events and even the accomplishment of desirable ones happen without effort, simply due to their intrinsic nature (svabhāva).

Words meanings summery:

• अनिष्टस्य (aniṣṭasya) - of the undesirable (event) (of the undesirable, of the unwanted)

• अभिनिर्वृत्तिम् (abhinirvṛttim) - the occurrence, the accomplishment (attainment, accomplishment, occurrence, completion)

• इष्टसंवृत्तिम् (iṣṭasaṁvṛttim) - the accomplishment of the desirable (event) (the accomplishment of the desirable, the completion of the desired)

• एव (eva) - even (indeed, only, just, even)

• च (ca) - and (and, also, moreover)

• अप्रयत्नेन (aprayatnena) - without effort (without effort, effortlessly)

• पश्यामः (paśyāmaḥ) - we observe (we see, we observe)

• केषांचित् (keṣāṁcit) - for some (people/entities) (of some, some (genitive plural))

• तत् (tat) - their (referring to 'some') (that, it)

• स्वभावतः (svabhāvataḥ) - due to their intrinsic nature (svabhāva) (by nature, naturally, due to intrinsic nature)

Words meanings and morphology

अनिष्टस्य (aniṣṭasya) - of the undesirable (event) (of the undesirable, of the unwanted)

(adjective)

Genitive, neuter, singular of aniṣṭa

aniṣṭa - undesired, unwanted, harmful

Past Passive Participle

Negative particle 'an' + root 'iṣ' (to wish) + kta (past passive participle suffix).

Compound type : nañ-tatpuruṣa (an+iṣṭa)

• an – not, un-
  indeclinable
• iṣṭa – desired, wished, sacrificed
  adjective (neuter)
  Past Passive Participle
  From root 'iṣ' (to wish/desire) with kta suffix.
  Root: iṣ (class 6)

Note: Used as a noun referring to 'the undesired (thing/outcome).'

अभिनिर्वृत्तिम् (abhinirvṛttim) - the occurrence, the accomplishment (attainment, accomplishment, occurrence, completion)

(noun)

Accusative, feminine, singular of abhinirvṛtti

abhinirvṛtti - attainment, accomplishment, occurrence, completion, manifestation

From root 'vṛt' with upasargas 'abhi' and 'nir'.

Prefixes: abhi+nir

Root: vṛt (class 1)

इष्टसंवृत्तिम् (iṣṭasaṁvṛttim) - the accomplishment of the desirable (event) (the accomplishment of the desirable, the completion of the desired)

(noun)

Accusative, feminine, singular of iṣṭasaṃvṛtti

iṣṭasaṁvṛtti - accomplishment of the desirable, completion of the desired

Compound type : ṣaṣṭhī-tatpuruṣa (iṣṭa+saṃvṛtti)

• iṣṭa – desired, wished, agreeable
  adjective (neuter)
  Past Passive Participle
  From root 'iṣ' (to wish/desire) with kta suffix.
  Root: iṣ (class 6)
• saṃvṛtti – accomplishment, completion, occurrence, transformation
  noun (feminine)
  From root 'vṛt' with upasarga 'sam'.
  Prefix: sam
  Root: vṛt (class 1)

एव (eva) - even (indeed, only, just, even)

(indeclinable)

च (ca) - and (and, also, moreover)

(indeclinable)

अप्रयत्नेन (aprayatnena) - without effort (without effort, effortlessly)

(adjective)

Instrumental, masculine, singular of aprayatna

aprayatna - without effort, effortless

Compound type : nañ-tatpuruṣa (a+prayatna)

• a – not, un-
  indeclinable
• prayatna – effort, exertion, attempt
  noun (masculine)
  From root 'yat' with upasarga 'pra'.
  Prefix: pra
  Root: yat (class 1)

Note: Used adverbially.

पश्यामः (paśyāmaḥ) - we observe (we see, we observe)

(verb)

1st person , plural, active, present (laṭ) of dṛś

Present tense, 1st person plural

From root 'dṛś' (class 1, replaces 'paśya' in present tense).

Root: dṛś (class 1)

केषांचित् (keṣāṁcit) - for some (people/entities) (of some, some (genitive plural))

(pronoun)

Genitive, masculine, plural of kaścid

kaścid - someone, something, some

Compound of 'ka' (who/what) and 'cid' (an indefinite particle).

Compound type : avyayībhāva (ka+cid)

• ka – who, what, which
  pronoun (masculine)
• cid – indeed, even, also, indefinite particle (sometimes)
  indeclinable

तत् (tat) - their (referring to 'some') (that, it)

(pronoun)

Nominative, neuter, singular of tad

tad - that, he, she, it

Note: Used here adjectivally to refer to the 'svabhāva' of those 'some'.

स्वभावतः (svabhāvataḥ) - due to their intrinsic nature (svabhāva) (by nature, naturally, due to intrinsic nature)

(indeclinable)

Derived from 'svabhāva' (one's own nature) with the suffix '-tas' (meaning 'from', 'by means of').