योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-34, verse-23

सा परा परमा काष्ठा प्रधानं शिवभावतः ।
चित्येका निरवच्छेदा तृतीया पावनी स्थितिः ॥ २३ ॥

sā parā paramā kāṣṭhā pradhānaṃ śivabhāvataḥ ,
cityekā niravacchedā tṛtīyā pāvanī sthitiḥ 23

23. sā parā paramā kāṣṭhā pradhānaṃ śiva-bhāvataḥ
citi-ekā niravacchadā tṛtīyā pāvanī sthitiḥ

23. sā parā paramā kāṣṭhā śiva-bhāvataḥ pradhānam,
citi-ekā niravacchadā tṛtīyā pāvanī sthitiḥ

23. That is the supreme, ultimate limit (kāṣṭhā), the principal state which arises from the nature of Śiva. It is the third purifying condition, a singular and uninterrupted consciousness (citi).

Words meanings summery:

• सा (sā) - she, that (feminine)

• परा (parā) - supreme, highest, ultimate

• परमा (paramā) - ultimate, highest, supreme

• काष्ठा (kāṣṭhā) - limit, peak, ultimate state, highest point

• प्रधानं (pradhānaṁ) - principal, chief, primary, important

• शिव-भावतः (śiva-bhāvataḥ) - from the nature of Śiva, due to Śiva's being

• चिति-एका (citi-ekā) - unified consciousness (citi)

• निरवच्छदा (niravacchadā) - undivided, uninterrupted, continuous

• तृतीया (tṛtīyā) - third

• पावनी (pāvanī) - purifying, sacred, holy

• स्थितिः (sthitiḥ) - state, condition, existence, position

Words meanings and morphology

सा (sā) - she, that (feminine)

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

परा (parā) - supreme, highest, ultimate

(adjective)

Nominative, feminine, singular of para

para - supreme, highest, ultimate, subsequent, other

परमा (paramā) - ultimate, highest, supreme

(adjective)

Nominative, feminine, singular of parama

parama - ultimate, highest, supreme, best

superlative of 'para'

काष्ठा (kāṣṭhā) - limit, peak, ultimate state, highest point

(noun)

Nominative, feminine, singular of kāṣṭhā

kāṣṭhā - limit, peak, ultimate state, highest point, extreme degree

प्रधानं (pradhānaṁ) - principal, chief, primary, important

(adjective)

Nominative, neuter, singular of pradhāna

pradhāna - principal, chief, primary, important; also: primordial matter (prakṛti)

Root: dhā (class 3)

शिव-भावतः (śiva-bhāvataḥ) - from the nature of Śiva, due to Śiva's being

(indeclinable)

formed from śivabhāva (noun) + -tas (suffix for ablative sense)

Compound type : tatpuruṣa (śiva+bhāva)

• śiva – auspicious, benevolent; a name of the deity Śiva
  proper noun (masculine)
• bhāva – state, condition, nature, feeling, being
  noun (masculine)
  Root: bhū (class 1)

चिति-एका (citi-ekā) - unified consciousness (citi)

(adjective)

Nominative, feminine, singular of citekā

citekā - unified consciousness

Compound type : tatpuruṣa (citi+ekā)

• citi – consciousness, intelligence, understanding
  noun (feminine)
  Root: cit (class 1)
• ekā – one, single, unique
  numeral adjective (feminine)

Note: Acts as an adjective describing sthitiḥ or implied sā.

निरवच्छदा (niravacchadā) - undivided, uninterrupted, continuous

(adjective)

Nominative, feminine, singular of niravacchada

niravacchada - undivided, uninterrupted, continuous, without break

Compound type : bahuvrihi (nis+avacchada)

• nis – without, free from
  indeclinable
• avacchada – covering, interruption, break
  noun (masculine)
  Prefix: ava
  Root: chad (class 10)

तृतीया (tṛtīyā) - third

(numeral adjective)

पावनी (pāvanī) - purifying, sacred, holy

(adjective)

Nominative, feminine, singular of pāvanī

pāvanī - purifying, sacred, holy, cleansing

Feminine form of pāvana (from pū, to purify)

Root: pū (class 1)

स्थितिः (sthitiḥ) - state, condition, existence, position

(noun)

Nominative, feminine, singular of sthiti

sthiti - state, condition, existence, position, permanence, stability

from root sthā (to stand)

Root: sthā (class 1)