योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-20, verse-21

इदं त्वदीयं सदनं तद्गेहाकाशकोशगम् ।
विद्धि मां त्वां च सर्वं च तच्चिद्व्योमैव केवलम् ॥ २१ ॥

idaṃ tvadīyaṃ sadanaṃ tadgehākāśakośagam ,
viddhi māṃ tvāṃ ca sarvaṃ ca taccidvyomaiva kevalam 21

21. idam tvadīyam sadanam tat-geha-ākāśa-kośa-gam viddhi
mām tvām ca sarvam ca tat cit-vyoma eva kevalam

21. idam tvadīyam sadanam tat-geha-ākāśa-kośa-gam,
mām tvām ca sarvam ca tat cit-vyoma kevalam eva viddhi

21. Know that this dwelling of yours, which is located within the ethereal space of that house, and know that I, you, and everything else, are solely the pure consciousness-space (cit-vyoma).

Words meanings summery:

• इदम् (idam) - this

• त्वदीयम् (tvadīyam) - your, belonging to you

• सदनम् (sadanam) - dwelling, residence, house

• तत्-गेह-आकाश-कोश-गम् (tat-geha-ākāśa-kośa-gam) - located within the ethereal sheath/space of that house

• विद्धि (viddhi) - know, understand

• माम् (mām) - me

• त्वाम् (tvām) - you

• च (ca) - and

• सर्वम् (sarvam) - all, everything

• च (ca) - and

• तत् (tat) - that, it

• चित्-व्योम (cit-vyoma) - consciousness-space, pure awareness as space

• एव (eva) - only, merely, indeed

• केवलम् (kevalam) - solely, merely, pure, absolute

Words meanings and morphology

इदम् (idam) - this

(pronoun)

Nominative, neuter, singular of idam

idam - this, this here

त्वदीयम् (tvadīyam) - your, belonging to you

(adjective)

Nominative, neuter, singular of tvadīya

tvadīya - your, yours, belonging to you

Derived from 'tvad' (you) with the 'īya' suffix indicating possession or relation.

सदनम् (sadanam) - dwelling, residence, house

(noun)

Nominative, neuter, singular of sadana

sadana - dwelling, residence, house, seat

Derived from root √sad (to sit, settle).

Root: sad (class 1)

तत्-गेह-आकाश-कोश-गम् (tat-geha-ākāśa-kośa-gam) - located within the ethereal sheath/space of that house

(adjective)

Nominative, neuter, singular of tat-geha-ākāśa-kośa-ga

tat-geha-ākāśa-kośa-ga - located in the spatial sheath of that house

Compound adjective describing the location.

Compound type : tatpurusha (tat+geha+ākāśa+kośa+ga)

• tat – that, it
  pronoun (neuter)
• geha – house, dwelling
  noun (neuter)
• ākāśa – ether, space, sky
  noun (masculine)
• kośa – sheath, covering, treasury, container
  noun (masculine)
• ga – going, moving, located in
  adjective (masculine)
  Derived from root √gam (to go).
  Root: gam (class 1)

विद्धि (viddhi) - know, understand

(verb)

2nd person , singular, active, imperative (loṭ) of √vid

Root: vid (class 2)

माम् (mām) - me

(pronoun)

Accusative, singular of asmad

asmad - I, we

त्वाम् (tvām) - you

(pronoun)

Accusative, singular of yuṣmad

yuṣmad - you (singular/plural)

च (ca) - and

(indeclinable)

सर्वम् (sarvam) - all, everything

(pronoun)

Accusative, neuter, singular of sarva

sarva - all, every, whole, complete

च (ca) - and

(indeclinable)

तत् (tat) - that, it

(pronoun)

Nominative, neuter, singular of tad

tad - that, it

चित्-व्योम (cit-vyoma) - consciousness-space, pure awareness as space

(noun)

Nominative, neuter, singular of cit-vyoma

cit-vyoma - consciousness-space

Compound type : karmadhāraya (cit+vyoma)

• cit – consciousness, intelligence, awareness
  noun (feminine)
• vyoma – sky, ether, space
  noun (neuter)

एव (eva) - only, merely, indeed

(indeclinable)

केवलम् (kevalam) - solely, merely, pure, absolute

(adjective)

Nominative, neuter, singular of kevala

kevala - sole, mere, pure, uncompounded, absolute