योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-54, verse-23

यन्मयो यो भवत्यन्तः स तदाप्नोत्यसंशयम् ।
ब्रह्मसत्यमवाप्तुं त्वं ब्रह्मसत्यमयो भव ॥ २३ ॥

yanmayo yo bhavatyantaḥ sa tadāpnotyasaṃśayam ,
brahmasatyamavāptuṃ tvaṃ brahmasatyamayo bhava 23

23. yanmayaḥ yaḥ bhavati antaḥ saḥ tat āpnoti asaṃśayam
brahmasatyam avāptum tvam brahmasatyamayaḥ bhava

23. yaḥ antaḥ yanmayaḥ bhavati,
saḥ tat asaṃśayam āpnoti.
brahmasatyam avāptum,
tvam brahmasatyamayaḥ bhava.

23. Whatever one's inner being (antaḥ) is permeated with, that one undoubtedly attains. To attain the ultimate reality (brahman) as truth, you yourself must become thoroughly imbued with the truth of the ultimate reality (brahman).

Words meanings summery:

• यन्मयः (yanmayaḥ) - permeated by that (which is the object of thought) (consisting of that, imbued with that, made of that)

• यः (yaḥ) - whoever, he who

• भवति (bhavati) - becomes, is, exists

• अन्तः (antaḥ) - inner being, mind (inner, internal, mind, heart, end, death)

• सः (saḥ) - he, that

• तत् (tat) - that (object of desire/focus) (that, it)

• आप्नोति (āpnoti) - attains, obtains, reaches

• असंशयम् (asaṁśayam) - without doubt, undoubtedly

• ब्रह्मसत्यम् (brahmasatyam) - the ultimate reality (brahman) as truth (the truth of Brahman, Brahman as reality)

• अवाप्तुम् (avāptum) - to attain, to obtain, to achieve

• त्वम् (tvam) - you

• ब्रह्मसत्यमयः (brahmasatyamayaḥ) - thoroughly imbued with the truth of ultimate reality (brahman) (consisting of Brahman-truth, permeated by Brahman-reality)

• भव (bhava) - become, be

Words meanings and morphology

यन्मयः (yanmayaḥ) - permeated by that (which is the object of thought) (consisting of that, imbued with that, made of that)

(adjective)

Nominative, masculine, singular of yanmaya

yanmaya - consisting of, made of, permeated by

compound of yad (what/which) + maya (made of), where d changes to n before m

Compound type : tatpuruṣa (yad+maya)

• yad – which, what
  pronoun
• maya – consisting of, made of, full of
  adjective
  suffix -maya forming adjectives of material or abundance

यः (yaḥ) - whoever, he who

(pronoun)

Nominative, masculine, singular of yad

yad - who, which, what

भवति (bhavati) - becomes, is, exists

(verb)

3rd person , singular, active, present indicative (laṭ) of bhū

present indicative, 3rd person singular, active voice

Root: bhū (class 1)

अन्तः (antaḥ) - inner being, mind (inner, internal, mind, heart, end, death)

(noun)

Nominative, neuter, singular of antas

antas - interior, inside, mind, heart, end

सः (saḥ) - he, that

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

तत् (tat) - that (object of desire/focus) (that, it)

(pronoun)

Accusative, neuter, singular of tad

tad - that, he, she, it

आप्नोति (āpnoti) - attains, obtains, reaches

(verb)

3rd person , singular, active, present indicative (laṭ) of āp

present indicative, 3rd person singular, active voice

Prefix: ā

Root: āp (class 5)

असंशयम् (asaṁśayam) - without doubt, undoubtedly

(indeclinable)

formed with negative prefix 'a' and 'saṃśaya' (doubt)

Compound type : nañ-tatpuruṣa (a+saṃśaya)

• a – not, un-
  indeclinable
  negative prefix
• saṃśaya – doubt, uncertainty
  noun (masculine)
  Prefix: sam
  Root: śi (class 7)

ब्रह्मसत्यम् (brahmasatyam) - the ultimate reality (brahman) as truth (the truth of Brahman, Brahman as reality)

(noun)

Accusative, neuter, singular of brahmasatya

brahmasatya - truth of Brahman, Brahman as reality

compound of brahman (ultimate reality) and satya (truth)

Compound type : tatpuruṣa (brahman+satya)

• brahman – ultimate reality, the Absolute
  noun (neuter)
  Root: bṛh (class 1)
• satya – truth, reality, actual
  noun (neuter)
  Root: as (class 2)

अवाप्तुम् (avāptum) - to attain, to obtain, to achieve

(indeclinable)

infinitive

infinitive form of verb āp with prefix ava

Prefix: ava

Root: āp (class 5)

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you

ब्रह्मसत्यमयः (brahmasatyamayaḥ) - thoroughly imbued with the truth of ultimate reality (brahman) (consisting of Brahman-truth, permeated by Brahman-reality)

(adjective)

Nominative, masculine, singular of brahmasatyamaya

brahmasatyamaya - consisting of Brahman-truth, made of Brahman-reality

derived from brahmasatya + maya (made of)

Compound type : tatpuruṣa (brahman+satya+maya)

• brahman – ultimate reality, the Absolute
  noun (neuter)
  Root: bṛh (class 1)
• satya – truth, reality, actual
  noun (neuter)
  Root: as (class 2)
• maya – consisting of, made of, full of
  adjective
  suffix -maya forming adjectives of material or abundance

भव (bhava) - become, be

(verb)

2nd person , singular, active, imperative (loṭ) of bhū

imperative, 2nd person singular, active voice

Root: bhū (class 1)