योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-74, verse-86

जगत्समरसानन्दचिदालोकावलम्बनम् ।
केन विस्मार्यते बुद्धिस्तत्त्वज्ञस्य महात्मनः ॥ ८६ ॥

jagatsamarasānandacidālokāvalambanam ,
kena vismāryate buddhistattvajñasya mahātmanaḥ 86

86. jagatsamarasānandacidālokāvalambanam kena
vismāryate buddhiḥ tattvajñasya mahātmanaḥ

86. केन तत्त्वज्ञस्य महात्मनः
जगत्समरसानन्दचिदालोकावलम्बनम् बुद्धिः विस्मार्यते

86. By whom can the understanding of a great soul (mahātman), one who knows the reality (tattva) and whose intellect relies on the light of consciousness—the very essence of uniform bliss throughout the universe—ever be made to forget?

Words meanings summery:

• जगत्समरसानन्दचिदालोकावलम्बनम् (jagatsamarasānandacidālokāvalambanam) - referring to the intellect (buddhi) which relies on the light of consciousness as its foundation, embodying uniform bliss throughout the universe (whose support is the light of consciousness, which is the uniform bliss of the world)

• केन (kena) - by whom, by which

• विस्मार्यते (vismāryate) - is made to forget, is caused to forget

• बुद्धिः (buddhiḥ) - intellect, understanding, perception

• तत्त्वज्ञस्य (tattvajñasya) - of a spiritual seeker or sage who has realized ultimate truth (of one who knows the truth, of the knower of reality)

• महात्मनः (mahātmanaḥ) - of a great soul, of a noble person

Words meanings and morphology

जगत्समरसानन्दचिदालोकावलम्बनम् (jagatsamarasānandacidālokāvalambanam) - referring to the intellect (buddhi) which relies on the light of consciousness as its foundation, embodying uniform bliss throughout the universe (whose support is the light of consciousness, which is the uniform bliss of the world)

(noun)

Nominative, neuter, singular of jagatsamarasānandacidālokāvalambana

jagatsamarasānandacidālokāvalambana - support of the light of consciousness, which is uniform bliss in the world

Compound type : Tatpuruṣa (jagat+samarasa+ānanda+cit+āloka+avalambana)

• jagat – world, universe
  noun (neuter)
• samarasa – uniform, harmonious, homogeneous essence
  adjective
• ānanda – bliss, joy, happiness (ānanda)
  noun (masculine)
• cit – consciousness, thought, spirit
  noun (feminine)
• āloka – light, vision, sight
  noun (masculine)
  Prefix: ā
• avalambana – support, reliance, refuge
  noun (neuter)
  Prefix: ava
  Root: lamb (class 1)

केन (kena) - by whom, by which

(pronoun)

Instrumental, masculine/neuter, singular of kim

kim - who, what, which

विस्मार्यते (vismāryate) - is made to forget, is caused to forget

(verb)

3rd person , singular, passive, present indicative (laṭ) of vismā

Causative stem with 'vi' prefix

Prefix: vi

Root: smṛ (class 1)

बुद्धिः (buddhiḥ) - intellect, understanding, perception

(noun)

Nominative, feminine, singular of buddhi

buddhi - intellect, understanding, perception

Root: budh (class 1)

तत्त्वज्ञस्य (tattvajñasya) - of a spiritual seeker or sage who has realized ultimate truth (of one who knows the truth, of the knower of reality)

(noun)

Genitive, masculine, singular of tattvajña

tattvajña - knower of truth/reality

Compound type : Tatpuruṣa (tattva+jña)

• tattva – truth, reality, essence
  noun (neuter)
• jña – knower, understanding
  adjective (masculine)
  Agent noun from root jñā
  Root: jñā (class 9)

महात्मनः (mahātmanaḥ) - of a great soul, of a noble person

(noun)

Genitive, masculine, singular of mahātman

mahātman - great soul, noble person (mahātman)

Compound type : Karmadhāraya (mahā+ātman)

• mahā – great, large, exalted
  adjective
• ātman – self, soul, spirit (ātman)
  noun (masculine)