योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-19, verse-32

षोडशास्य सहस्राणि योजनानामधः क्षितौ ।
स्थिताः पादाः प्रपूज्यन्ते नागासुरमहोरगैः ॥ ३२ ॥

ṣoḍaśāsya sahasrāṇi yojanānāmadhaḥ kṣitau ,
sthitāḥ pādāḥ prapūjyante nāgāsuramahoragaiḥ 32

32. ṣoḍaśa asya sahasrāṇi yojanānām adhaḥ kṣitau
sthitāḥ pādāḥ prapūjyante nāgāsuramahoragaiḥ

32. asya pādāḥ ṣoḍaśa sahasrāṇi yojanānām adhaḥ
kṣitau sthitāḥ nāgāsuramahoragaiḥ prapūjyante

32. Its feet, extending sixteen thousand yojanas below the earth, are worshipped by Nāgas, Asuras, and great serpents.

Words meanings summery:

• षोडश (ṣoḍaśa) - sixteen

• अस्य (asya) - of him, its

• सहस्राणि (sahasrāṇi) - thousands

• योजनानाम् (yojanānām) - of yojanas

• अधः (adhaḥ) - below, underneath, downwards

• क्षितौ (kṣitau) - on the earth, in the earth

• स्थिताः (sthitāḥ) - situated, standing, established

• पादाः (pādāḥ) - feet

• प्रपूज्यन्ते (prapūjyante) - are worshipped completely/duly

• नागासुरमहोरगैः (nāgāsuramahoragaiḥ) - by Nāgas, Asuras, and great serpents/uragas

Words meanings and morphology

षोडश (ṣoḍaśa) - sixteen

(numeral adjective)

अस्य (asya) - of him, its

(pronoun)

Genitive, masculine, singular of idam

idam - this, this one

Note: Forms of 'idam' in genitive singular can be asya (masc/neut) or asyāḥ (fem). Context suggests masculine (referring to a being).

सहस्राणि (sahasrāṇi) - thousands

(noun)

Nominative, neuter, plural of sahasra

sahasra - thousand

योजनानाम् (yojanānām) - of yojanas

(noun)

Genitive, neuter, plural of yojana

yojana - a measure of distance (approx. 8-10 miles); harnessing; journey

Root: yuj (class 7)

अधः (adhaḥ) - below, underneath, downwards

(indeclinable)

क्षितौ (kṣitau) - on the earth, in the earth

(noun)

Locative, feminine, singular of kṣiti

kṣiti - earth, soil, ground; abode

Root: kṣi (class 5)

स्थिताः (sthitāḥ) - situated, standing, established

(adjective)

Nominative, masculine, plural of sthita

sthita - standing, situated, abiding, existing

Past Passive Participle

Derived from root sthā (to stand) with suffix -ta.

Root: sthā (class 1)

Note: Agrees with 'pādāḥ'.

पादाः (pādāḥ) - feet

(noun)

Nominative, masculine, plural of pāda

pāda - foot; leg; ray of light; quarter; verse line

Note: Subject of 'prapūjyante'.

प्रपूज्यन्ते (prapūjyante) - are worshipped completely/duly

(verb)

3rd person , plural, passive, present (laṭ) of prapūj

Present Tense, Passive Voice

Formed from pra- + pūj (to worship)

Prefix: pra

Root: pūj (class 10)

Note: Derived from root pūj with upasarga pra.

नागासुरमहोरगैः (nāgāsuramahoragaiḥ) - by Nāgas, Asuras, and great serpents/uragas

(noun)

Instrumental, masculine, plural of nāgāsuramahoraga

nāgāsuramahoraga - Nāgas, Asuras, and great serpents (collectively)

Compound type : dvandva (nāga+asura+mahoraga)

• nāga – serpent, snake; a Nāga (mythical serpentine being); elephant
  noun (masculine)
• asura – demon; anti-god; a powerful being; spiritual being
  noun (masculine)
• mahoraga – great serpent, large snake; a powerful uraga
  noun (masculine)