महाभारतः mahābhārataḥ - book-12, chapter-318, verse-8

अदृष्टपूर्वानादाय भावानपरिशङ्कितान् ।
इष्टानिष्टान्मनुष्याणामस्तं गच्छन्ति रात्रयः ॥८॥

8. adṛṣṭapūrvānādāya bhāvānapariśaṅkitān ,
iṣṭāniṣṭānmanuṣyāṇāmastaṁ gacchanti rātrayaḥ.

8. adṛṣṭapūrvān ādāya bhāvān apariśaṅkitān
iṣṭāniṣṭān manuṣyāṇām astam gacchanti rātrayaḥ

8. rātrayaḥ adṛṣṭapūrvān apariśaṅkitān iṣṭāniṣṭān
bhāvān manuṣyāṇām ādāya astam gacchanti

8. The nights pass, bringing to humans both desired and undesired circumstances, which were previously unseen and unsuspected.

Words meanings summery:

• अदृष्टपूर्वान् (adṛṣṭapūrvān) - unseen before, unprecedented

• आदाय (ādāya) - bringing (having taken, having received, bringing)

• भावान् (bhāvān) - circumstances (states, conditions, existences, things)

• अपरिशङ्कितान् (apariśaṅkitān) - unsuspected, unfeared

• इष्टानिष्टान् (iṣṭāniṣṭān) - desired and undesired, good and bad

• मनुष्याणाम् (manuṣyāṇām) - for humans (of humans, for humans)

• अस्तम् (astam) - to their setting, to disappearance (setting, disappearance, west)

• गच्छन्ति (gacchanti) - pass (referring to nights) (go, move, proceed)

• रात्रयः (rātrayaḥ) - nights

Words meanings and morphology

अदृष्टपूर्वान् (adṛṣṭapūrvān) - unseen before, unprecedented

(adjective)

Accusative, masculine, plural of adṛṣṭapūrva

adṛṣṭapūrva - unseen before, unprecedented

nañ-tatpuruṣa compound of 'a-' and 'dṛṣṭapūrva'

Compound type : nañ-tatpuruṣa (a+dṛṣṭapūrva)

• a – not, non-
  indeclinable
  negative prefix
• dṛṣṭapūrva – seen before
  adjective (masculine)
  Tatpuruṣa compound: dṛṣṭa (seen) + pūrva (before)

आदाय (ādāya) - bringing (having taken, having received, bringing)

(indeclinable)

absolutive (gerund)

from root dā (to give) with prefix ā (to take), in absolutive form (lyap)

Prefix: ā

Root: dā (class 3)

भावान् (bhāvān) - circumstances (states, conditions, existences, things)

(noun)

Accusative, masculine, plural of bhāva

bhāva - state, condition, existence, nature, feeling, thing

from root bhū (to be)

Root: bhū (class 1)

अपरिशङ्कितान् (apariśaṅkitān) - unsuspected, unfeared

(adjective)

Accusative, masculine, plural of apariśaṅkita

apariśaṅkita - unsuspected, unfeared, unafraid

nañ-tatpuruṣa compound of 'a-' and 'pariśaṅkita'

Compound type : nañ-tatpuruṣa (a+pariśaṅkita)

• a – not, non-
  indeclinable
  negative prefix
• pariśaṅkita – suspected, feared
  adjective (masculine)
  Past Passive Participle
  from root śaṅk (to doubt, to fear) with prefix pari
  Prefix: pari
  Root: śaṅk (class 1)

इष्टानिष्टान् (iṣṭāniṣṭān) - desired and undesired, good and bad

(adjective)

Accusative, masculine, plural of iṣṭāniṣṭa

iṣṭāniṣṭa - desired and undesired, good and bad

Dvandva compound of 'iṣṭa' and 'aniṣṭa'

Compound type : dvandva (iṣṭa+aniṣṭa)

• iṣṭa – desired, liked, wished for
  adjective (masculine)
  Past Passive Participle
  from root iṣ (to wish, to desire)
  Root: iṣ (class 6)
• aniṣṭa – undesired, disliked, evil, bad
  adjective (masculine)
  nañ-tatpuruṣa compound of 'a-' and 'iṣṭa'
  Prefix: a

मनुष्याणाम् (manuṣyāṇām) - for humans (of humans, for humans)

(noun)

Genitive, masculine, plural of manuṣya

manuṣya - human, man

अस्तम् (astam) - to their setting, to disappearance (setting, disappearance, west)

(noun)

Accusative, masculine, singular of asta

asta - setting, disappearance, home, west

Note: Used adverbially to indicate direction 'to setting/disappearance'.

गच्छन्ति (gacchanti) - pass (referring to nights) (go, move, proceed)

(verb)

3rd person , plural, active, present (laṭ) of gam

Root: gam (class 1)

रात्रयः (rātrayaḥ) - nights

(noun)

Nominative, feminine, plural of rātri

rātri - night