योगवासिष्ठः yogavāsiṣṭhaḥ - book-4, chapter-39, verse-26

अपरीक्ष्य च यः शिष्यं प्रशास्त्यतिविमूढधीः ।
स एव नरकं याति यावदाभूतसंप्लवम् ॥ २६ ॥

aparīkṣya ca yaḥ śiṣyaṃ praśāstyativimūḍhadhīḥ ,
sa eva narakaṃ yāti yāvadābhūtasaṃplavam 26

26. aparīkṣya ca yaḥ śiṣyam praśāsti ativimūḍhadhīḥ
| sa eva narakam yāti yāvat ābhūtasaṃplavam ||

26. yaḥ ativimūḍhadhīḥ ca śiṣyam aparīkṣya praśāsti,
sa eva yāvat ābhūtasaṃplavam narakam yāti.

26. And whoever, with an exceedingly deluded intellect, instructs a student without examining them, that very person goes to hell until the great dissolution of all beings.

Words meanings summery:

• अपरीक्ष्य (aparīkṣya) - without examining, without testing

• च (ca) - and, also

• यः (yaḥ) - who, whoever

• शिष्यम् (śiṣyam) - student, disciple

• प्रशास्ति (praśāsti) - instructs, teaches, governs

• अतिविमूढधीः (ativimūḍhadhīḥ) - whose intellect is exceedingly deluded

• स (sa) - refers to the one who instructs the student (he, that (person))

• एव (eva) - Emphasizes 'he' (sa eva - that very one) (indeed, only, certainly)

• नरकम् (narakam) - hell

• याति (yāti) - goes, proceeds

• यावत् (yāvat) - until (the dissolution) (as long as, until, as much as)

• आभूतसंप्लवम् (ābhūtasaṁplavam) - until the dissolution of beings / end of the universe

Words meanings and morphology

अपरीक्ष्य (aparīkṣya) - without examining, without testing

(indeclinable)

absolutive

from a + pari + īkṣ + ya (absolutive suffix)

Compound type : tatpurusha (a+parīkṣya)

• a – not, non-, un-
  indeclinable
  negative prefix
• parīkṣya – having examined, having tested
  indeclinable
  absolutive
  from pari + īkṣ + ya (absolutive suffix)
  Prefix: pari
  Root: īkṣ (class 1)

च (ca) - and, also

(indeclinable)

यः (yaḥ) - who, whoever

(pronoun)

Nominative, masculine, singular of yad

yad - which, who, what, that

शिष्यम् (śiṣyam) - student, disciple

(noun)

Accusative, masculine, singular of śiṣya

śiṣya - student, disciple, pupil

Gerundive/Future Passive Participle

from śiṣ (to teach) + ya suffix; literally 'one to be taught'

Root: śiṣ (class 7)

प्रशास्ति (praśāsti) - instructs, teaches, governs

(verb)

3rd person , singular, active, present (laṭ) of praśās

Prefix: pra

Root: śās (class 2)

Note: Used here in the sense of 'to teach'.

अतिविमूढधीः (ativimūḍhadhīḥ) - whose intellect is exceedingly deluded

(adjective)

Nominative, masculine, singular of ativimūḍhadhī

ativimūḍhadhī - having an exceedingly deluded intellect

Compound type : bahuvrihi (ati+vimūḍha+dhī)

• ati – excessively, beyond, very
  indeclinable
  prefix indicating excess
• vimūḍha – deluded, bewildered, confused
  adjective (masculine)
  Past Passive Participle
  from vi + muh + kta suffix
  Prefix: vi
  Root: muh (class 4)
• dhī – intellect, thought, understanding
  noun (feminine)

Note: Qualifies 'yaḥ'.

स (sa) - refers to the one who instructs the student (he, that (person))

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

एव (eva) - Emphasizes 'he' (sa eva - that very one) (indeed, only, certainly)

(indeclinable)

नरकम् (narakam) - hell

(noun)

Accusative, neuter, singular of naraka

naraka - hell, infernal region, perdition

Note: Can also be masculine. Often neuter when used as a place.

याति (yāti) - goes, proceeds

(verb)

3rd person , singular, active, present (laṭ) of yā

Root: yā (class 2)

यावत् (yāvat) - until (the dissolution) (as long as, until, as much as)

(indeclinable)

Note: Functions as a temporal conjunction here.

आभूतसंप्लवम् (ābhūtasaṁplavam) - until the dissolution of beings / end of the universe

(noun)

Accusative, masculine, singular of ābhūtasaṃplava

ābhūtasaṁplava - dissolution of all beings, universal destruction, end of a world cycle

Compound type : tatpurusha (ā+bhūta+saṃplava)

• ā – up to, until, towards
  indeclinable
  prefix/preposition
• bhūta – being, creature, element, past
  noun (neuter)
  Past Passive Participle
  from bhū + kta suffix
  Root: bhū (class 1)
• saṃplava – flood, deluge, dissolution, destruction
  noun (masculine)
  from sam + plu
  Prefix: sam
  Root: plu (class 1)

Note: Governed by 'yāvat'.