योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-86, verse-2

तदेवात्मानुसंधानमत्यजन्सममिन्द्रियैः ।
चेतसा कलयामास दृष्टलोकपरावरः ॥ २ ॥

tadevātmānusaṃdhānamatyajansamamindriyaiḥ ,
cetasā kalayāmāsa dṛṣṭalokaparāvaraḥ 2

2. tat eva ātmanusandhānam atyajan samam
indriyaiḥ cetasā kalayāmāsa dṛṣṭalokaparāvaraḥ

2. dṛṣṭalokaparāvaraḥ saḥ (muniḥ) tat eva ātmanusandhānam atyajan (san),
indriyaiḥ samam cetasā kalayāmāsa.

2. Without abandoning that very practice of self-inquiry (ātman-anusandhāna), he, whose vision encompassed the higher and lower realms, thoroughly understood with his mind, along with his senses.

Words meanings summery:

• तत् (tat) - referring to the previously mentioned state or practice (that, this, it)

• एव (eva) - emphasizing 'that very' practice (indeed, only, certainly, just)

• आत्मनुसन्धानम् (ātmanusandhānam) - the spiritual practice of introspecting and understanding one's true nature (self-inquiry, investigation of the self (ātman))

• अत्यजन् (atyajan) - the sage's continuous adherence to the practice (not abandoning, not giving up)

• समम् (samam) - in conjunction with, or while maintaining equality among the senses (together with, equally, properly, fully)

• इन्द्रियैः (indriyaiḥ) - involving the faculties of perception (by the senses, with the organs of sense)

• चेतसा (cetasā) - as the instrument for comprehension (by the mind, with the mind, by thought)

• कलयामास (kalayāmāsa) - he achieved a deep understanding or realization (he comprehended, he perceived, he calculated, he understood)

• दृष्टलोकपरावरः (dṛṣṭalokaparāvaraḥ) - describing the sage's extensive knowledge and perception of the cosmos (one who has seen the higher and lower worlds; whose vision extends to all realms)

Words meanings and morphology

तत् (tat) - referring to the previously mentioned state or practice (that, this, it)

(pronoun)

Accusative, neuter, singular of tad

tad - that, this, it

एव (eva) - emphasizing 'that very' practice (indeed, only, certainly, just)

(indeclinable)

Emphatic particle.

आत्मनुसन्धानम् (ātmanusandhānam) - the spiritual practice of introspecting and understanding one's true nature (self-inquiry, investigation of the self (ātman))

(noun)

Accusative, neuter, singular of ātmanusandhāna

ātmanusandhāna - self-inquiry, investigation of the self (ātman), contemplation of the soul

Compound of ātman (self) and anusandhāna (investigation, inquiry).

Compound type : tatpuruṣa (ātman+anusandhāna)

• ātman – self, soul, spirit, individual soul, Supreme Soul
  noun (masculine)
• anusandhāna – investigation, inquiry, research, pursuit
  noun (neuter)
  From prefix anu + sam + root dhā (to place).
  Prefixes: anu+sam
  Root: dhā (class 3)

अत्यजन् (atyajan) - the sage's continuous adherence to the practice (not abandoning, not giving up)

(adjective)

Nominative, masculine, singular of atyajant

atyajant - not abandoning, not leaving, not forsaking

Present Active Participle (negative)

Negative particle a + root tyaj (to abandon) + śatṛ participle suffix.

Root: tyaj (class 1)

Note: Acts as an adjective describing the subject (muni) and their action.

समम् (samam) - in conjunction with, or while maintaining equality among the senses (together with, equally, properly, fully)

(indeclinable)

Used adverbially. When governing an instrumental case, it means 'together with.'

Note: Functions as a preposition with indriyaiḥ.

इन्द्रियैः (indriyaiḥ) - involving the faculties of perception (by the senses, with the organs of sense)

(noun)

Instrumental, neuter, plural of indriya

indriya - sense, organ of sense, faculty, power (especially virile power)

From indra (lord of senses, also referring to powerful faculties).

चेतसा (cetasā) - as the instrument for comprehension (by the mind, with the mind, by thought)

(noun)

Instrumental, neuter, singular of cetas

cetas - mind, intellect, thought, consciousness, heart

From root cit (to perceive, understand).

Root: cit (class 1)

कलयामास (kalayāmāsa) - he achieved a deep understanding or realization (he comprehended, he perceived, he calculated, he understood)

(verb)

3rd person , singular, active, perfect (liṭ) of kal

perfect tense (liṭ), periphrastic

3rd person singular perfect active, periphrastic, of root kal (10th class or causal of kal).

Root: kal (class 10)

दृष्टलोकपरावरः (dṛṣṭalokaparāvaraḥ) - describing the sage's extensive knowledge and perception of the cosmos (one who has seen the higher and lower worlds; whose vision extends to all realms)

(adjective)

Nominative, masculine, singular of dṛṣṭalokaparāvara

dṛṣṭalokaparāvara - one who has seen/perceived the higher and lower worlds/realms

Bahuvrīhi compound: dṛṣṭa (seen) + loka (world) + para (higher) + avara (lower).

Compound type : bahuvrīhi (dṛṣṭa+loka+para+avara)

• dṛṣṭa – seen, perceived, observed
  adjective (masculine)
  Past Passive Participle
  From root dṛś (to see) with suffix kta.
  Root: dṛś (class 1)
• loka – world, realm, people
  noun (masculine)
• para – higher, supreme, other, opposite
  adjective (masculine)
• avara – lower, inferior, later
  adjective (masculine)