योगवासिष्ठः yogavāsiṣṭhaḥ - book-2, chapter-14, verse-31

तत्पदालम्बनं चेतः स्फारमाभासमागतम् ।
नास्तमेति न चोदेति खमिवातिततान्तरम् ॥ ३१ ॥

tatpadālambanaṃ cetaḥ sphāramābhāsamāgatam ,
nāstameti na codeti khamivātitatāntaram 31

31. tat-pada-ālambanam cetaḥ sphāram ābhāsam āgatam
na astam eti na ca udeti kham iva atitata-antaram

31. tat-pada-ālambanam cetaḥ sphāram ābhāsam āgatam
kham iva atitata-antaram na astam eti na ca udeti

31. The mind (cetas), resting on that ultimate reality (brahman), becomes vast and luminous. It neither sets nor rises, like the infinitely expansive sky.

Words meanings summery:

• तत्-पद-आलम्बनम् (tat-pada-ālambanam) - resting on the ultimate reality (brahman) (supported by that state/reality, resting on that position)

• चेतः (cetaḥ) - the mind or consciousness that is being described (mind, consciousness, intellect)

• स्फारम् (sphāram) - expanded, vast (referring to the consciousness) (expanded, vast, wide, full)

• आभासम् (ābhāsam) - manifestation, luminosity (light, luster, appearance, manifestation)

• आगतम् (āgatam) - having come into (manifestation), attained (come, arrived, obtained)

• न (na) - not (not, no)

• अस्तम् (astam) - setting (as in the sun setting) (setting, home, western mountain)

• एति (eti) - goes, comes (to setting) (goes, comes)

• न (na) - not (not, no)

• च (ca) - nor, and (and, also, but, moreover)

• उदेति (udeti) - rises (rises, comes forth)

• खम् (kham) - sky, space (sky, ether, space, void)

• इव (iva) - like, as (like, as, as if)

• अतितत-अन्तरम् (atitata-antaram) - with boundless expanse (whose expanse is exceedingly stretched, boundless)

Words meanings and morphology

तत्-पद-आलम्बनम् (tat-pada-ālambanam) - resting on the ultimate reality (brahman) (supported by that state/reality, resting on that position)

(noun)

Nominative, neuter, singular of tat-pada-ālambana

tat-pada-ālambana - supported by that state, resting on that ultimate reality

Compound type : tatpurusha (tat+pada+ālambana)

• tat – that, by that
  pronoun (neuter)
• pada – step, foot, position, state, word, ultimate state
  noun (neuter)
• ālambana – support, basis, prop, resting place
  noun (neuter)
  From ā-√labh (to take, seize, support)
  Prefix: ā
  Root: labh (class 1)

चेतः (cetaḥ) - the mind or consciousness that is being described (mind, consciousness, intellect)

(noun)

Nominative, neuter, singular of cetas

cetas - mind, consciousness, intellect, heart

From √cit (to perceive, understand)

Root: cit (class 1)

स्फारम् (sphāram) - expanded, vast (referring to the consciousness) (expanded, vast, wide, full)

(adjective)

Nominative, neuter, singular of sphāra

sphāra - expanded, vast, wide, full, luminous

From √sphāy (to swell, expand)

Root: sphāy (class 1)

Note: Agrees with cetaḥ.

आभासम् (ābhāsam) - manifestation, luminosity (light, luster, appearance, manifestation)

(noun)

Accusative, neuter, singular of ābhāsa

ābhāsa - light, luster, splendor, manifestation, appearance

From ā-√bhās (to shine, appear)

Prefix: ā

Root: bhās (class 1)

आगतम् (āgatam) - having come into (manifestation), attained (come, arrived, obtained)

(adjective)

Nominative, neuter, singular of āgata

āgata - come, arrived, obtained, attained

Past Passive Participle

From ā-√gam (to come)

Prefix: ā

Root: gam (class 1)

न (na) - not (not, no)

(indeclinable)

अस्तम् (astam) - setting (as in the sun setting) (setting, home, western mountain)

(noun)

Accusative, masculine, singular of asta

asta - setting, home, western mountain, disappearance

एति (eti) - goes, comes (to setting) (goes, comes)

(verb)

3rd person , singular, active, present (laṭ) of i

present active

Root: i (class 2)

न (na) - not (not, no)

(indeclinable)

च (ca) - nor, and (and, also, but, moreover)

(indeclinable)

उदेति (udeti) - rises (rises, comes forth)

(verb)

3rd person , singular, active, present (laṭ) of ud-i

present active

From ud-√i (to go up)

Prefix: ud

Root: i (class 2)

खम् (kham) - sky, space (sky, ether, space, void)

(noun)

Nominative, neuter, singular of kha

kha - sky, ether, space, void, zero

Note: Used with iva (like the sky).

इव (iva) - like, as (like, as, as if)

(indeclinable)

अतितत-अन्तरम् (atitata-antaram) - with boundless expanse (whose expanse is exceedingly stretched, boundless)

(adjective)

Nominative, neuter, singular of atitata-antara

atitata-antara - whose expanse is exceedingly stretched, boundless space

Bahuvrīhi compound describing kham (sky).

Compound type : bahuvrīhi (ati+tata+antara)

• ati – exceedingly, very, beyond
  indeclinable
  prefix
• tata – stretched, extended, spread out
  adjective (masculine)
  Past Passive Participle
  From √tan (to stretch, extend)
  Root: tan (class 8)
• antara – interior, space, interval, difference
  noun (neuter)

Note: Agrees with kham.