योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-79, verse-31

बिसतन्तुर्महामेरुर्भो राजन्यदपेक्षया ।
तस्य कस्योदरे सन्ति मेरुमन्दरकोटयः ॥ ३१ ॥

bisatanturmahāmerurbho rājanyadapekṣayā ,
tasya kasyodare santi merumandarakoṭayaḥ 31

31. bisa-tantuḥ mahā-meruḥ bho rājan yat-apekṣayā
tasya kasya udare santi meru-mandara-koṭayaḥ

31. bho rājan yat-apekṣayā bisa-tantuḥ mahā-meruḥ (bhavati)?
tasya kasya udare meru-mandara-koṭayaḥ santi?

31. O King, in comparison to what is a lotus fiber like Mount Meru? In the belly of that (entity), whose belly, are countless crores of Mount Meru and Mount Mandara?

Words meanings summery:

• बिस-तन्तुः (bisa-tantuḥ) - lotus fiber

• महा-मेरुः (mahā-meruḥ) - Mount Meru (the great mountain)

• भो (bho) - O! (vocative particle)

• राजन् (rājan) - O King!

• यत्-अपेक्षया (yat-apekṣayā) - in comparison to what, with respect to which

• तस्य (tasya) - of that, to that

• कस्य (kasya) - whose, of what, of which

• उदरे (udare) - in the belly, in the interior

• सन्ति (santi) - they are, they exist

• मेरु-मन्दर-कोटयः (meru-mandara-koṭayaḥ) - countless Meru and Mandara mountains (crores of Meru and Mandara mountains)

Words meanings and morphology

बिस-तन्तुः (bisa-tantuḥ) - lotus fiber

(noun)

Nominative, masculine, singular of bisa-tantu

bisa-tantu - fiber of a lotus stem

Compound type : ṣaṣṭhī-tatpuruṣa (bisa+tantu)

• bisa – lotus fiber, lotus stem
  noun (neuter)
• tantu – thread, fiber
  noun (masculine)

महा-मेरुः (mahā-meruḥ) - Mount Meru (the great mountain)

(proper noun)

Nominative, masculine, singular of mahā-meru

mahā-meru - Great Meru, a mythical sacred mountain in Hindu cosmology

Compound type : karmadhāraya (mahā+meru)

• mahā – great, large
  adjective (feminine)
  Feminine stem of mahat, used as the first part of a compound.
• meru – Meru, a mythical mountain
  proper noun (masculine)

भो (bho) - O! (vocative particle)

(indeclinable)

राजन् (rājan) - O King!

(noun)

Vocative, masculine, singular of rājan

rājan - king, ruler

यत्-अपेक्षया (yat-apekṣayā) - in comparison to what, with respect to which

(indeclinable)

Compound type : bahuvrīhi (yat+apekṣā)

• yat – which, what
  pronoun (neuter)
• apekṣā – regard, respect, expectation, comparison
  noun (feminine)
  Derived from root īkṣ (to see) with prefix apa-.
  Prefix: apa
  Root: īkṣ (class 1)

तस्य (tasya) - of that, to that

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

कस्य (kasya) - whose, of what, of which

(pronoun)

Genitive, masculine, singular of kim

kim - who, what, which, why

उदरे (udare) - in the belly, in the interior

(noun)

Locative, neuter, singular of udara

udara - belly, womb, interior, cavity

सन्ति (santi) - they are, they exist

(verb)

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

Present Tense, 3rd Person Plural

Root: as (class 2)

मेरु-मन्दर-कोटयः (meru-mandara-koṭayaḥ) - countless Meru and Mandara mountains (crores of Meru and Mandara mountains)

(noun)

Nominative, feminine, plural of meru-mandara-koṭi

meru-mandara-koṭi - crores of Meru and Mandara mountains

Compound type : dvandva-tatpuruṣa (meru+mandara+koṭi)

• meru – Meru, a mythical mountain
  proper noun (masculine)
• mandara – Mandara, a mythical mountain
  proper noun (masculine)
• koṭi – crore (ten million), immense number, tip
  noun (feminine)