योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-22, verse-50

संविन्मात्रं विदुर्जन्तुं तस्य प्रसरणं जगत् ।
आत्मनिष्ठत्वमजगत्परमेत्युपदेशभूः ॥ ५० ॥

saṃvinmātraṃ vidurjantuṃ tasya prasaraṇaṃ jagat ,
ātmaniṣṭhatvamajagatparametyupadeśabhūḥ 50

50. saṃvinmātram viduḥ jantum tasya prasaraṇam jagat
ātmaniṣṭhatvam ajagatparama iti upadeśabhūḥ

50. jantum saṃvinmātram viduḥ tasya prasaraṇam jagat
ātmaniṣṭhatvam ajagatparama iti upadeśabhūḥ

50. They understand the living being (jantu) to be consciousness alone. The world (jagat) is its expansion. The fundamental teaching (upadeśabhūḥ) is that being steadfast in one's true self (ātman) is the supreme state, transcendent to the world.

Words meanings summery:

• संविन्मात्रम् (saṁvinmātram) - pure consciousness, consciousness alone

• विदुः (viduḥ) - (sages) understand (they know, they understand)

• जन्तुम् (jantum) - living being, creature, human

• तस्य (tasya) - of that (living being) (its, of that, of him)

• प्रसरणम् (prasaraṇam) - expansion, diffusion, manifestation

• जगत् (jagat) - world, universe

• आत्मनिष्ठत्वम् (ātmaniṣṭhatvam) - being steadfast in one's true self (ātman) (state of being fixed in the self, devotion to the self)

• अजगत्परम (ajagatparama) - supreme beyond the world, transcendent to the world

• इति (iti) - thus (marking the end of a statement or teaching) (thus, in this manner, 'so-called')

• उपदेशभूः (upadeśabhūḥ) - fundamental teaching, essential instruction (ground of instruction, basis of teaching, source of advice)

Words meanings and morphology

संविन्मात्रम् (saṁvinmātram) - pure consciousness, consciousness alone

(adjective)

Accusative, neuter, singular of saṃvinmātra

saṁvinmātra - consisting only of consciousness, pure consciousness

compound of saṃvid (consciousness) and mātra (only, merely)

Compound type : karmadhāraya (saṃvid+mātra)

• saṃvid – consciousness, knowledge
  noun (feminine)
  Prefix: sam
  Root: vid (class 2)
• mātra – only, merely, measure, extent
  indeclinable (neuter)

Note: Acts as the object of viduḥ.

विदुः (viduḥ) - (sages) understand (they know, they understand)

(verb)

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

present active

Root: vid (class 2)

Note: The implied subject is 'sages' or 'wise ones'.

जन्तुम् (jantum) - living being, creature, human

(noun)

Accusative, masculine, singular of jantu

jantu - living being, creature, man, people

Root: jan

Note: Object of viduḥ.

तस्य (tasya) - of that (living being) (its, of that, of him)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

Note: Refers to jantu (living being).

प्रसरणम् (prasaraṇam) - expansion, diffusion, manifestation

(noun)

Nominative, neuter, singular of prasaraṇa

prasaraṇa - expansion, spreading, diffusion, manifestation

derived from pra-sṛ (to spread forth)

Prefix: pra

Root: sṛ (class 1)

Note: Subject of jagat as predicate.

जगत् (jagat) - world, universe

(noun)

Nominative, neuter, singular of jagat

jagat - world, universe, what moves

present active participle

From root gam (to go) with reduplication

Root: gam (class 1)

Note: Predicate nominative for prasaraṇam.

आत्मनिष्ठत्वम् (ātmaniṣṭhatvam) - being steadfast in one's true self (ātman) (state of being fixed in the self, devotion to the self)

(noun)

Nominative, neuter, singular of ātmaniṣṭhatva

ātmaniṣṭhatva - the state of being devoted to or fixed in the self (ātman)

ātmaniṣṭha (fixed in ātman) + tva (suffix forming abstract nouns)

Compound type : tatpurusha (ātman+niṣṭha+tva)

• ātman – self, soul, spirit, essence
  noun (masculine)
• niṣṭha – standing in, fixed in, devoted to
  adjective (masculine)
  From root sthā (to stand) with prefix ni (down) and suffix ṭha. Often means 'devoted to'.
  Prefix: ni
  Root: sthā (class 1)
• tva – state of being, -ness
  suffix (neuter)
  Used to form abstract nouns from adjectives or nouns.

Note: Subject of the implied verb 'is'.

अजगत्परम (ajagatparama) - supreme beyond the world, transcendent to the world

(adjective)

Nominative, neuter, singular of ajagatparama

ajagatparama - supreme, transcending the world, not the world

Compound of a (not), jagat (world), parama (supreme).

Compound type : Nañ-tatpuruṣa (a+jagat+parama)

• a – not, non-, un-
  prefix
  Negative prefix.
• jagat – world, universe
  noun (neuter)
  present active participle
  From root gam (to go).
  Root: gam (class 1)
• parama – supreme, highest, ultimate
  adjective (neuter)
  Superlative form of para (other, beyond).

Note: Predicate adjective for ātmaniṣṭhatvam.

इति (iti) - thus (marking the end of a statement or teaching) (thus, in this manner, 'so-called')

(indeclinable)

उपदेशभूः (upadeśabhūḥ) - fundamental teaching, essential instruction (ground of instruction, basis of teaching, source of advice)

(noun)

Nominative, feminine, singular of upadeśabhū

upadeśabhū - basis of instruction, ground of teaching

Compound of upadeśa (instruction) and bhū (ground, earth, place, source).

Compound type : tatpurusha (upadeśa+bhū)

• upadeśa – instruction, advice, teaching
  noun (masculine)
  From root diś (to point) with prefix upa (near).
  Prefix: upa
  Root: diś (class 6)
• bhū – earth, ground, place, source, being
  noun (feminine)
  From root bhū (to be).
  Root: bhū (class 1)

Note: Predicate nominative for the implied 'this is'.