योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-21, verse-18

यदा शकलिताद्रीन्द्रा वान्ति प्रलयवायवः ।
पार्वतीं धारणां बद्ध्वा खे तिष्ठाम्यचलं तदा ॥ १८ ॥

yadā śakalitādrīndrā vānti pralayavāyavaḥ ,
pārvatīṃ dhāraṇāṃ baddhvā khe tiṣṭhāmyacalaṃ tadā 18

18. yadā śakalitādrīndrāḥ vānti pralayavāyavaḥ
pārvatīm dhāraṇām baddhvā khe tiṣṭhāmi acalam tadā

18. yadā pralayavāyavaḥ śakalitādrīndrāḥ vānti tadā
pārvatīm dhāraṇām baddhvā khe acalam tiṣṭhāmi

18. When the winds of cosmic dissolution (pralaya) blow, breaking the great mountains into fragments, then I remain unmoving in space, having established myself in the earthen meditation (pārvatī dhāraṇā).

Words meanings summery:

• यदा (yadā) - when

• शकलिताद्रीन्द्राः (śakalitādrīndrāḥ) - great mountains shattered, lords of mountains turned into pieces

• वान्ति (vānti) - they blow, they flow

• प्रलयवायवः (pralayavāyavaḥ) - cosmic winds of dissolution (winds of dissolution)

• पार्वतीम् (pārvatīm) - earthen, meditative absorption related to the earth element (pertaining to Pārvatī, earthen, related to earth)

• धारणाम् (dhāraṇām) - mental retention, concentration, meditative absorption

• बद्ध्वा (baddhvā) - having bound, having fixed, having established

• खे (khe) - in the sky, in space

• तिष्ठामि (tiṣṭhāmi) - I stand, I remain, I dwell

• अचलम् (acalam) - unmoving, steady, firm

• तदा (tadā) - then, at that time

Words meanings and morphology

यदा (yadā) - when

(indeclinable)

शकलिताद्रीन्द्राः (śakalitādrīndrāḥ) - great mountains shattered, lords of mountains turned into pieces

(adjective)

Nominative, masculine, plural of śakalitādrīndra

śakalitādrīndra - great mountains broken into pieces

Compound type : Bahuvrīhi (śakalita+adrīndra)

• śakalita – broken into pieces, shattered
  adjective (neuter)
  Past Passive Participle
  from śakal (to break into pieces)
• adrīndra – king of mountains, great mountain
  noun (masculine)

वान्ति (vānti) - they blow, they flow

(verb)

3rd person , plural, active, present indicative (lat) of vā

Present Active Indic

3rd Person Plural

Root: vā (class 2)

प्रलयवायवः (pralayavāyavaḥ) - cosmic winds of dissolution (winds of dissolution)

(noun)

Nominative, masculine, plural of pralayavāyu

pralayavāyu - wind of dissolution

Compound type : Tatpuruṣa (pralaya+vāyu)

• pralaya – dissolution, destruction
  noun (masculine)
• vāyu – wind, air
  noun (masculine)

पार्वतीम् (pārvatīm) - earthen, meditative absorption related to the earth element (pertaining to Pārvatī, earthen, related to earth)

(adjective)

Accusative, feminine, singular of pārvatī

pārvatī - daughter of the mountain (Himālaya), earthen

धारणाम् (dhāraṇām) - mental retention, concentration, meditative absorption

(noun)

Accusative, feminine, singular of dhāraṇā

dhāraṇā - retention, concentration, meditation

Root: dhṛ (class 1)

बद्ध्वा (baddhvā) - having bound, having fixed, having established

(indeclinable)

Absolutive (Gerund)

Root: bandh (class 1)

खे (khe) - in the sky, in space

(noun)

Locative, neuter, singular of kha

kha - sky, space, ether

तिष्ठामि (tiṣṭhāmi) - I stand, I remain, I dwell

(verb)

1st person , singular, active, present indicative (lat) of sthā

Present Active Indic

1st Person Singular

Root: sthā (class 1)

अचलम् (acalam) - unmoving, steady, firm

(adjective)

Accusative, neuter, singular of acala

acala - unmoving, immoveable, steady

Note: Used adverbially to modify 'tiṣṭhāmi'.

तदा (tadā) - then, at that time

(indeclinable)