महाभारतः mahābhārataḥ - book-12, chapter-120, verse-8

आपद्द्वारेषु यत्तः स्याज्जलप्रस्रवणेष्विव ।
शैलवर्षोदकानीव द्विजान्सिद्धान्समाश्रयेत् ॥८॥

8. āpaddvāreṣu yattaḥ syājjalaprasravaṇeṣviva ,
śailavarṣodakānīva dvijānsiddhānsamāśrayet.

8. āpaddvāreṣu yattaḥ syāt jalaprasravaṇeṣu iva
śailavarṣodakāni iva dvijān siddhān samāśrayet

8. yattaḥ syāt āpaddvāreṣu jalaprasravaṇeṣu iva
siddhān dvijān śailavarṣodakāni iva samāśrayet

8. One should be vigilant and attentive concerning avenues of danger, just as one is careful with water outlets. One should seek refuge in perfected sages (dvija), just as one would depend on mountain rainwater.

Words meanings summery:

• आपद्द्वारेषु (āpaddvāreṣu) - in the gates of calamity, in the avenues of danger

• यत्तः (yattaḥ) - vigilant and attentive (diligent, attentive, careful, restrained, prepared)

• स्यात् (syāt) - should be (should be, may be, would be)

• जलप्रस्रवणेषु (jalaprasravaṇeṣu) - in water outlets, in streams of water, in places where water flows out

• इव (iva) - just as (like, as, as if)

• शैलवर्षोदकानि (śailavarṣodakāni) - mountain rainwater

• इव (iva) - just as (like, as, as if)

• द्विजान् (dvijān) - sages (dvija) (twice-born ones, brahmins, sages)

• सिद्धान् (siddhān) - perfected (perfected, accomplished, successful, achieved)

• समाश्रयेत् (samāśrayet) - one should take refuge (one should take refuge, one should resort to, one should depend on)

Words meanings and morphology

आपद्द्वारेषु (āpaddvāreṣu) - in the gates of calamity, in the avenues of danger

(noun)

Locative, neuter, plural of āpaddvāra

āpaddvāra - gate of calamity, avenue of danger

Compound type : tatpuruṣa (āpad+dvāra)

• āpad – calamity, misfortune, danger
  noun (feminine)
• dvāra – door, gate, entrance, avenue
  noun (neuter)

यत्तः (yattaḥ) - vigilant and attentive (diligent, attentive, careful, restrained, prepared)

(adjective)

Nominative, masculine, singular of yatta

yatta - diligent, attentive, careful, restrained, prepared

Past Passive Participle

Derived from root yat (to strive, be diligent).

Root: yat (class 1)

स्यात् (syāt) - should be (should be, may be, would be)

(verb)

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

Optative Mood, 3rd Person Singular

Root: as (class 2)

जलप्रस्रवणेषु (jalaprasravaṇeṣu) - in water outlets, in streams of water, in places where water flows out

(noun)

Locative, neuter, plural of jalaprasravaṇa

jalaprasravaṇa - water outlet, stream of water, gushing of water

Compound type : tatpuruṣa (jala+prasravaṇa)

• jala – water
  noun (neuter)
• prasravaṇa – flowing forth, gushing, stream, outlet
  noun (neuter)
  Derived from root sru (to flow) with prefix pra.
  Prefix: pra
  Root: sru (class 1)

इव (iva) - just as (like, as, as if)

(indeclinable)

शैलवर्षोदकानि (śailavarṣodakāni) - mountain rainwater

(noun)

Accusative, neuter, plural of śailavarṣodaka

śailavarṣodaka - mountain rainwater

Compound type : tatpuruṣa (śaila+varṣa+udaka)

• śaila – mountain, rocky
  noun/adjective (masculine/neuter)
• varṣa – rain, year, raining
  noun (masculine/neuter)
  From root vṛṣ 'to rain'.
  Root: vṛṣ (class 1)
• udaka – water
  noun (neuter)
  Root: und (class 7)

Note: The case is accusative as an implied object of 'rely upon' or 'make use of', analogous to 'dvijān siddhān'.

इव (iva) - just as (like, as, as if)

(indeclinable)

द्विजान् (dvijān) - sages (dvija) (twice-born ones, brahmins, sages)

(noun)

Accusative, masculine, plural of dvija

dvija - twice-born (epithet for Brahmins, Kshatriyas, Vaishyas, or sometimes birds, snakes, teeth), sage

Compound type : bahuvrīhi (dvi+ja)

• dvi – two, twice
  numeral
• ja – born, produced from
  adjective/noun
  Derived from root jan (to be born).
  Root: jan (class 4)

सिद्धान् (siddhān) - perfected (perfected, accomplished, successful, achieved)

(adjective)

Accusative, masculine, plural of siddha

siddha - perfected, accomplished, successful, proven, established

Past Passive Participle

Derived from root sidh (to succeed, accomplish).

Root: sidh (class 1)

Note: Adjective modifying dvijān.

समाश्रयेत् (samāśrayet) - one should take refuge (one should take refuge, one should resort to, one should depend on)

(verb)

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

Optative Mood, 3rd Person Singular

From root śri (to resort to, lean on) with prefixes sam and ā.

Prefixes: sam+ā

Root: śri (class 1)