योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-67, verse-21

न सच्छास्त्रेण सा विद्धि न सन्न्यायेन सा कला ।
अस्ति नास्त्यमितोद्योगाद्यदभ्यासान्न सिद्ध्यति ॥ २१ ॥

na sacchāstreṇa sā viddhi na sannyāyena sā kalā ,
asti nāstyamitodyogādyadabhyāsānna siddhyati 21

21. na sat-śāstreṇa sā viddhi na sat-nyāyena sā kalā
asti na asti amita-udyogāt yat abhyāsāt na siddhyati

21. viddhi sā kalā na sat-śāstreṇa na sat-nyāyena
na asti yat amita-udyogāt abhyāsāt na siddhyati

21. Know that such an art (kalā) is not achieved through good scripture (śāstra), nor through sound logic (nyāya). There is nothing that does not succeed through endless effort (udyoga) and practice (abhyāsa).

Words meanings summery:

• न (na) - not, no

• सत्-शास्त्रेण (sat-śāstreṇa) - by good scripture, by true doctrine

• सा (sā) - that, she

• विद्धि (viddhi) - know, understand

• न (na) - not, no

• सत्-न्यायेन (sat-nyāyena) - by good logic, by sound principle

• सा (sā) - that, she

• कला (kalā) - art, skill, a part, a digit (of the moon)

• अस्ति (asti) - is, exists

• न (na) - not, no

• अस्ति (asti) - is, exists

• अमित-उद्योगात् (amita-udyogāt) - from endless effort, due to immeasurable exertion

• यत् (yat) - which, that which

• अभ्यासात् (abhyāsāt) - from practice, by repetition

• न (na) - not, no

• सिद्ध्यति (siddhyati) - succeeds, is accomplished, is perfected

Words meanings and morphology

न (na) - not, no

(indeclinable)

सत्-शास्त्रेण (sat-śāstreṇa) - by good scripture, by true doctrine

(noun)

Instrumental, neuter, singular of sat-śāstra

sat-śāstra - good scripture, true doctrine

Compound of sat (good, true) and śāstra (scripture).

Compound type : Karmahāraya (sat+śāstra)

• sat – good, true, existent
  adjective
  Present Active Participle
  Derived from root as (to be).
  Root: as (class 2)
• śāstra – scripture, doctrine, treatise, science
  noun (neuter)
  Root: śās (class 2)

सा (sā) - that, she

(pronoun)

Nominative, feminine, singular of tad

tad - that, she (demonstrative pronoun)

विद्धि (viddhi) - know, understand

(verb)

2nd person , singular, active, imperative (loṭ) of vid

Root: vid (class 2)

न (na) - not, no

(indeclinable)

सत्-न्यायेन (sat-nyāyena) - by good logic, by sound principle

(noun)

Instrumental, masculine, singular of sat-nyāya

sat-nyāya - good logic, sound principle, true argument

Compound of sat (good, true) and nyāya (logic).

Compound type : Karmahāraya (sat+nyāya)

• sat – good, true, existent
  adjective
  Present Active Participle
  Derived from root as (to be).
  Root: as (class 2)
• nyāya – logic, justice, rule, method, system
  noun (masculine)
  Prefixes: ni+ā
  Root: i (class 2)

सा (sā) - that, she

(pronoun)

Nominative, feminine, singular of tad

tad - that, she (demonstrative pronoun)

कला (kalā) - art, skill, a part, a digit (of the moon)

(noun)

Nominative, feminine, singular of kalā

kalā - art, skill, a part, a digit (of the moon), a small portion

अस्ति (asti) - is, exists

(verb)

3rd person , singular, active, present (lat) of as

Root: as (class 2)

न (na) - not, no

(indeclinable)

अस्ति (asti) - is, exists

(verb)

3rd person , singular, active, present (lat) of as

Root: as (class 2)

अमित-उद्योगात् (amita-udyogāt) - from endless effort, due to immeasurable exertion

(noun)

Ablative, masculine, singular of amita-udyoga

amita-udyoga - endless effort, immeasurable exertion

Compound of amita (endless) and udyoga (effort).

Compound type : Tatpuruṣa (amita+udyoga)

• amita – immeasurable, endless
  adjective
  Past Passive Participle
  Derived from root mā (to measure) with prefix a (not).
  Prefix: a
  Root: mā (class 2)
• udyoga – effort, exertion, undertaking
  noun (masculine)
  Prefix: ut
  Root: yuj (class 7)

यत् (yat) - which, that which

(pronoun)

Nominative, neuter, singular of yad

yad - which, that which (relative pronoun)

अभ्यासात् (abhyāsāt) - from practice, by repetition

(noun)

Ablative, masculine, singular of abhyāsa

abhyāsa - practice, repetition, exercise, study, habit

Derived from root as (to throw, cast) with prefix abhi.

Prefix: abhi

Root: as (class 4)

न (na) - not, no

(indeclinable)

सिद्ध्यति (siddhyati) - succeeds, is accomplished, is perfected

(verb)

3rd person , singular, active, present (lat) of sidh

Root: sidh (class 4)