योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-127, verse-15

भूलोकमेव पातालयुतं नक्षत्रमण्डलम् ।
पर्येति लोकालोकान्ते नान्यच्चित्कल्पनाच्च तत् ॥ १५ ॥

bhūlokameva pātālayutaṃ nakṣatramaṇḍalam ,
paryeti lokālokānte nānyaccitkalpanācca tat 15

15. bhūlokam eva pātālayutam nakṣatramaṇḍalam
paryeti lokālokānte na anyat citkalpanāt ca tat

15. bhūlokam eva pātālayutam nakṣatramaṇḍalam (asti).
tat lokālokānte paryeti.
na anyat (asti).
ca tat citkalpanāt (asti).

15. The earthly realm (bhūloka) itself, along with the underworld (Pātāla), forms the stellar sphere (nakṣatramaṇḍala). This sphere revolves at the boundary of the Lokāloka mountain. There is nothing else beyond it, and even that (the stellar sphere) is merely a creation of the mind's conception.

Words meanings summery:

• भूलोकम् (bhūlokam) - the earthly realm, the earth-world

• एव (eva) - itself (indeed, very, only)

• पातालयुतम् (pātālayutam) - along with the underworld (Pātāla) (connected with Pātāla, united with the underworld)

• नक्षत्रमण्डलम् (nakṣatramaṇḍalam) - the stellar sphere (nakṣatramaṇḍala) (the starry sphere, the planetary system)

• पर्येति (paryeti) - revolves (goes around, revolves, encompasses)

• लोकालोकान्ते (lokālokānte) - at the boundary of the Lokāloka mountain (at the end/boundary of Lokāloka (mountain))

• न (na) - nothing (not, no)

• अन्यत् (anyat) - anything else (other, different, anything else)

• चित्कल्पनात् (citkalpanāt) - from the mind's conception (from mental conception, from the imagination of consciousness)

• च (ca) - and even (and, also)

• तत् (tat) - that (the stellar sphere) (that, it)

Words meanings and morphology

भूलोकम् (bhūlokam) - the earthly realm, the earth-world

(noun)

Nominative, masculine, singular of bhūloka

bhūloka - the earthly realm, world of mortals

Compound of bhū and loka

Compound type : tatpuruṣa (bhū+loka)

• bhū – earth, land
  noun (feminine)
• loka – world, realm, people
  noun (masculine)
  Root: lok (class 1)

Note: Acts as the subject in apposition with nakṣatramaṇḍalam, hence nominative sense.

एव (eva) - itself (indeed, very, only)

(indeclinable)

Note: Emphatic particle.

पातालयुतम् (pātālayutam) - along with the underworld (Pātāla) (connected with Pātāla, united with the underworld)

(adjective)

Nominative, neuter, singular of pātālayuta

pātālayuta - connected/united with Pātāla

Compound of Pātāla and yuta

Compound type : tatpuruṣa (pātāla+yuta)

• pātāla – underworld, nether regions
  noun (masculine/neuter)
• yuta – joined, united, connected
  adjective
  Past Passive Participle
  Derived from root yu (to join) with suffix -ta
  Root: yu (class 2)

Note: Qualifies 'nakṣatramaṇḍalam'.

नक्षत्रमण्डलम् (nakṣatramaṇḍalam) - the stellar sphere (nakṣatramaṇḍala) (the starry sphere, the planetary system)

(noun)

Nominative, neuter, singular of nakṣatramaṇḍala

nakṣatramaṇḍala - constellation, starry sphere, planetary system

Compound of nakṣatra and maṇḍala

Compound type : tatpuruṣa (nakṣatra+maṇḍala)

• nakṣatra – star, constellation, lunar mansion
  noun (neuter)
• maṇḍala – circle, disk, sphere, region
  noun (neuter)

Note: Subject of the implied verb "is" or equivalent.

पर्येति (paryeti) - revolves (goes around, revolves, encompasses)

(verb)

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

Prefixes: pari+ā

Root: i (class 2)

लोकालोकान्ते (lokālokānte) - at the boundary of the Lokāloka mountain (at the end/boundary of Lokāloka (mountain))

(noun)

Locative, masculine, singular of lokālokānta

lokālokānta - the boundary of the Lokāloka mountain

Compound of lokāloka and anta

Compound type : tatpuruṣa (lokāloka+anta)

• lokāloka – the world-and-non-world (name of a mythical mountain)
  proper noun (masculine)
  Compound of loka and aloka
• anta – end, boundary, limit
  noun (masculine)

Note: Refers to the Lokāloka mountain.

न (na) - nothing (not, no)

(indeclinable)

Note: Negation.

अन्यत् (anyat) - anything else (other, different, anything else)

(pronoun)

Nominative, neuter, singular of anya

anya - other, another, different

Note: Subject of an implied "is".

चित्कल्पनात् (citkalpanāt) - from the mind's conception (from mental conception, from the imagination of consciousness)

(noun)

Ablative, feminine, singular of citkalpanā

citkalpanā - mental conception, imagination of consciousness

Compound of cit and kalpanā

Compound type : tatpuruṣa (cit+kalpanā)

• cit – consciousness, mind, thought
  noun (feminine)
  Root: cit (class 1)
• kalpanā – imagination, conception, creation
  noun (feminine)
  Derived from root kḷp (to form, imagine)
  Root: kḷp (class 1)

Note: Indicates origin or cause.

च (ca) - and even (and, also)

(indeclinable)

Note: Connects clauses, sometimes implying 'even'.

तत् (tat) - that (the stellar sphere) (that, it)

(pronoun)

Nominative, neuter, singular of tad

tad - that, it

Note: Refers to the 'nakṣatramaṇḍalam' or the entire cosmic structure described.