योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-6, verse-18

प्रथितगुणान्सुगुरून्निषेव्य यत्नादमलधिया प्रविचार्य चित्तरत्नम् ।
गतिममलामुपयान्ति मानवास्ते परमवलोक्य चिरं प्रकाशमन्तः ॥ १८ ॥

prathitaguṇānsugurūnniṣevya yatnādamaladhiyā pravicārya cittaratnam ,
gatimamalāmupayānti mānavāste paramavalokya ciraṃ prakāśamantaḥ 18

18. prathitaguṇān sugurūn niṣevya yatnāt
amaladhiyā pravicārya cittaratnam
gatim amalām upayānti mānavāḥ te
param avalokya ciram prakāśam antaḥ

18. te mānavāḥ prathitaguṇān sugurūn
yatnāt niṣevya amaladhiyā cittaratnam
pravicārya ciram antaḥ param
prakāśam avalokya amalām gatim upayānti

18. Those humans, having diligently served virtuous gurus, and having thoroughly discerned the jewel of the mind (cittaratnam) with a pure intellect, eventually attain a flawless state by perceiving the supreme light within [themselves] for a long time.

Words meanings summery:

• प्रथितगुणान् (prathitaguṇān) - renowned for their virtues (renowned for qualities/virtues)

• सुगुरून् (sugurūn) - virtuous gurus (good teachers, virtuous gurus)

• निषेव्य (niṣevya) - having diligently served (having served, having resorted to)

• यत्नात् (yatnāt) - with diligent effort (by effort, with exertion)

• अमलधिया (amaladhiyā) - with a pure intellect (by a pure intellect, with a spotless mind)

• प्रविचार्य (pravicārya) - having thoroughly discerned (having thoroughly considered/discerned)

• चित्तरत्नम् (cittaratnam) - the mind, considered as a precious jewel (cittaratnam) (the jewel of the mind)

• गतिम् (gatim) - a state (state, course, destination)

• अमलाम् (amalām) - a flawless state (pure, spotless, flawless)

• उपयान्ति (upayānti) - they attain (they attain, they approach)

• मानवाः (mānavāḥ) - those humans (humans, mankind)

• ते (te) - those (referring to humans) (they, those)

• परम् (param) - supreme (supreme, highest, ultimate)

• अवलोक्य (avalokya) - having perceived (having seen, having perceived, having observed)

• चिरम् (ciram) - for a long time (for a long time, for ever)

• प्रकाशम् (prakāśam) - the divine light (light, radiance, manifestation)

• अन्तः (antaḥ) - within themselves (within, inside, in the interior)

Words meanings and morphology

प्रथितगुणान् (prathitaguṇān) - renowned for their virtues (renowned for qualities/virtues)

(adjective)

Accusative, masculine, plural of prathitaguṇa

prathitaguṇa - celebrated for good qualities, famous for virtues

Compound type : bahuvrīhi (prathita+guṇa)

• prathita – famous, celebrated, known
  adjective
  Past Passive Participle
  Derived from root prath (to be famous, to spread)
  Root: prath (class 1)
• guṇa – quality, attribute, virtue
  noun (masculine)

Note: Modifies sugurūn

सुगुरून् (sugurūn) - virtuous gurus (good teachers, virtuous gurus)

(noun)

Accusative, masculine, plural of suguru

suguru - good teacher, proper guide, virtuous guru (guru)

Compound type : karmadhāraya (su+guru)

• su – good, well, excellent
  indeclinable
• guru – teacher, preceptor, spiritual guide (guru)
  noun (masculine)

Note: Object of niṣevya

निषेव्य (niṣevya) - having diligently served (having served, having resorted to)

(indeclinable)

Absolutive (gerund)

Formed from root sev with prefix ni, suffix -ya

Prefix: ni

Root: sev (class 1)

Note: Absolutive modifying mānavāḥ

यत्नात् (yatnāt) - with diligent effort (by effort, with exertion)

(noun)

Ablative, masculine, singular of yatna

yatna - effort, exertion, endeavor

Root: yat (class 1)

Note: Used adverbially (with effort) modifying niṣevya

अमलधिया (amaladhiyā) - with a pure intellect (by a pure intellect, with a spotless mind)

(noun)

Instrumental, feminine, singular of amaladhi

amaladhi - one with a pure intellect/mind

Compound type : karmadhāraya (amala+dhi)

• amala – spotless, pure, clear
  adjective
• dhi – intellect, mind, thought, understanding
  noun (feminine)
  Root: dhā (class 3)

Note: Instrument by which pravicārya is performed

प्रविचार्य (pravicārya) - having thoroughly discerned (having thoroughly considered/discerned)

(indeclinable)

Absolutive (gerund)

Formed from root car with prefixes pra and vi, suffix -ya

Prefixes: pra+vi

Root: car (class 1)

Note: Absolutive modifying mānavāḥ

चित्तरत्नम् (cittaratnam) - the mind, considered as a precious jewel (cittaratnam) (the jewel of the mind)

(noun)

Accusative, neuter, singular of cittaratna

cittaratna - jewel of the mind, mind-jewel

Compound type : karmadhāraya (citta+ratna)

• citta – mind, thought, intellect, consciousness
  noun (neuter)
  Root: cit (class 1)
• ratna – jewel, gem, precious stone
  noun (neuter)

Note: Object of pravicārya

गतिम् (gatim) - a state (state, course, destination)

(noun)

Accusative, feminine, singular of gati

gati - going, movement, course, state, destination

Root: gam (class 1)

Note: Object of upayānti

अमलाम् (amalām) - a flawless state (pure, spotless, flawless)

(adjective)

Accusative, feminine, singular of amala

amala - spotless, pure, clear, faultless

Compound type : nañ-tatpuruṣa (a+mala)

• a – not, non-
  indeclinable
• mala – impurity, dirt, stain
  noun (neuter)

Note: Modifies gatim

उपयान्ति (upayānti) - they attain (they attain, they approach)

(verb)

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

Formed from root yā with prefix upa

Prefix: upa

Root: yā (class 2)

Note: Main verb of the sentence

मानवाः (mānavāḥ) - those humans (humans, mankind)

(noun)

Nominative, masculine, plural of mānava

mānava - human, man, descendant of Manu

Root: manu

Note: Subject of upayānti

ते (te) - those (referring to humans) (they, those)

(pronoun)

Nominative, masculine, plural of tad

tad - that, those

Note: Qualifies mānavāḥ

परम् (param) - supreme (supreme, highest, ultimate)

(adjective)

Accusative, masculine, singular of para

para - supreme, highest, ultimate, other, distant

Note: Modifies prakāśam

अवलोक्य (avalokya) - having perceived (having seen, having perceived, having observed)

(indeclinable)

Absolutive (gerund)

Formed from root lok with prefix ava, suffix -ya

Prefix: ava

Root: lok (class 10)

Note: Absolutive modifying mānavāḥ

चिरम् (ciram) - for a long time (for a long time, for ever)

(indeclinable)

Note: Adverbial use of neuter singular accusative

प्रकाशम् (prakāśam) - the divine light (light, radiance, manifestation)

(noun)

Accusative, masculine, singular of prakāśa

prakāśa - light, brightness, manifestation, clarity

Prefix: pra

Root: kāś (class 1)

Note: Object of avalokya

अन्तः (antaḥ) - within themselves (within, inside, in the interior)

(indeclinable)

Note: Adverbial modifier