योगवासिष्ठः yogavāsiṣṭhaḥ - book-2, chapter-14, verse-30

स्वविचारमहौषध्या साधुश्चित्तनिषण्णया ।
तयोत्तमत्वप्रदया नाभिवाञ्छति नोज्झति ॥ ३० ॥

svavicāramahauṣadhyā sādhuścittaniṣaṇṇayā ,
tayottamatvapradayā nābhivāñchati nojjhati 30

30. sva-vicāra-mahoṣadhyā sādhuḥ citta-niṣaṇṇayā tayā
uttamattva-pradayā na abhivāñchati na ujjhati

30. sādhuḥ sva-vicāra-mahoṣadhyā citta-niṣaṇṇayā tayā
uttamattva-pradayā na abhivāñchati na ujjhati

30. Through that great medicine of one's own inquiry, which is well-established in the mind and bestows the state of supreme excellence, the discerning individual neither craves nor relinquishes anything.

Words meanings summery:

• स्व-विचार-महोषध्या (sva-vicāra-mahoṣadhyā) - by the great medicine of one's own inquiry

• साधुः (sādhuḥ) - the wise person, sage, virtuous man

• चित्त-निषण्णया (citta-niṣaṇṇayā) - by that which is settled in the mind

• तया (tayā) - by that

• उत्तमत्त्व-प्रदया (uttamattva-pradayā) - by that which bestows supreme excellence

• न (na) - not, no

• अभिवाञ्छति (abhivāñchati) - desires, longs for, yearns

• न (na) - not, no

• उज्झति (ujjhati) - abandons, gives up, forsakes

Words meanings and morphology

स्व-विचार-महोषध्या (sva-vicāra-mahoṣadhyā) - by the great medicine of one's own inquiry

(noun)

Instrumental, feminine, singular of sva-vicāra-mahoṣadhī

sva-vicāra-mahoṣadhī - the great medicine of one's own inquiry

Compound type : tatpurusha (sva+vicāra+mahā+oṣadhī)

• sva – one's own, self
  pronoun
• vicāra – inquiry, discernment, reflection
  noun (masculine)
  Prefix: vi
  Root: car (class 1)
• mahat – great, large, excellent
  adjective
• oṣadhī – herb, medicinal plant, medicine
  noun (feminine)

साधुः (sādhuḥ) - the wise person, sage, virtuous man

(noun)

Nominative, masculine, singular of sādhu

sādhu - good, virtuous, wise, righteous, saint

चित्त-निषण्णया (citta-niṣaṇṇayā) - by that which is settled in the mind

(adjective)

Instrumental, feminine, singular of citta-niṣaṇṇa

citta-niṣaṇṇa - settled in the mind, residing in the mind

Past Passive Participle

niṣaṇṇa from root sad with prefix ni, kta suffix.

Compound type : saptamī-tatpuruṣa (citta+niṣaṇṇa)

• citta – mind, thought, consciousness
  noun (neuter)
• niṣaṇṇa – settled, seated, residing, fixed
  adjective (masculine)
  Past Passive Participle
  From root sad (to sit, settle) with prefix ni and kta suffix.
  Prefix: nis
  Root: sad (class 1)

तया (tayā) - by that

(pronoun)

Instrumental, feminine, singular of tad

tad - that, she, it

उत्तमत्त्व-प्रदया (uttamattva-pradayā) - by that which bestows supreme excellence

(adjective)

Instrumental, feminine, singular of uttamattva-pradā

uttamattva-pradā - giver of supreme excellence

Primary derivative (kṛt)

Compound type : tatpurusha (uttamattva+pradā)

• uttamattva – state of being best/supreme, excellence, supremacy
  noun (neuter)
  From uttama + tva (abstract suffix).
• pradā – giver, bestower
  adjective (masculine)
  Primary derivative (kṛt)
  From root dā with prefix pra + suffix a.
  Prefix: pra
  Root: dā (class 3)

न (na) - not, no

(indeclinable)

अभिवाञ्छति (abhivāñchati) - desires, longs for, yearns

(verb)

3rd person , singular, active, present indicative (laṭ) of abhivāñch

Prefix: abhi

Root: vāñch (class 1)

न (na) - not, no

(indeclinable)

उज्झति (ujjhati) - abandons, gives up, forsakes

(verb)

3rd person , singular, active, present indicative (laṭ) of ujjhati

Root: ujjhati (class 1)