योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-41, verse-16

गुरूपदेशशास्त्रार्थैर्विना चात्मा न बुध्यते ।
एतत्संयोगसत्तैव स्वात्मज्ञानप्रकाशिनी ॥ १६ ॥

gurūpadeśaśāstrārthairvinā cātmā na budhyate ,
etatsaṃyogasattaiva svātmajñānaprakāśinī 16

16. gurūpadeśaśāstrārthaiḥ vinā ca ātmā na budhyate
etat saṃyogasattā eva svātmajñānaprakāśinī

16. ca gurūpadeśaśāstrārthaiḥ vinā ātmā na budhyate.
etat saṃyogasattā eva svātmajñānaprakāśinī (bhavati).

16. And without the meanings derived from both the spiritual teacher's (guru) instructions and the scriptures (śāstra), the self (ātman) is not understood. Indeed, the very presence of this combination is what illuminates one's own self-knowledge (ātman-jñāna).

Words meanings summery:

• गुरूपदेशशास्त्रार्थैः (gurūpadeśaśāstrārthaiḥ) - by the meanings of guru's instructions and scriptures

• विना (vinā) - without, except

• च (ca) - and, also, moreover

• आत्मा (ātmā) - self, soul, spirit, essence (ātman)

• न (na) - not, nor

• बुध्यते (budhyate) - is understood, is known, is realized, is awakened

• एतत् (etat) - this (combination) (this)

• संयोगसत्ता (saṁyogasattā) - the existence of conjunction, the state of combination, the presence of union

• एव (eva) - only, indeed, just, very

• स्वात्मज्ञानप्रकाशिनी (svātmajñānaprakāśinī) - illuminating one's own self-knowledge, revealing one's own true nature

Words meanings and morphology

गुरूपदेशशास्त्रार्थैः (gurūpadeśaśāstrārthaiḥ) - by the meanings of guru's instructions and scriptures

(noun)

Instrumental, masculine, plural of gurūpadeśaśāstrārtha

gurūpadeśaśāstrārtha - the meanings of the instructions of a teacher and scriptures

Compound type : dvandva (gurūpadeśa+śāstrārtha)

• guru – teacher, preceptor, spiritual guide (guru)
  noun (masculine)
• upadeśa – instruction, teaching, advice
  noun (masculine)
  From verb root √diś (to point) with prefix upa-
  Prefix: upa
  Root: √diś (class 6)
• śāstra – scripture, sacred text, treatise, science (śāstra)
  noun (neuter)
  From verb root √śās (to teach, rule)
  Root: √śās (class 2)
• artha – meaning, purpose, object, wealth
  noun (masculine)

विना (vinā) - without, except

(indeclinable)

च (ca) - and, also, moreover

(indeclinable)

आत्मा (ātmā) - self, soul, spirit, essence (ātman)

(noun)

Nominative, masculine, singular of ātman

ātman - self, soul, spirit, individual soul, universal spirit (ātman)

न (na) - not, nor

(indeclinable)

बुध्यते (budhyate) - is understood, is known, is realized, is awakened

(verb)

3rd person , singular, passive, present indicative (lat) of budhyate

Present passive, 3rd person singular

Root: √budh (class 4)

एतत् (etat) - this (combination) (this)

(pronoun)

Nominative, neuter, singular of etas

etas - this

संयोगसत्ता (saṁyogasattā) - the existence of conjunction, the state of combination, the presence of union

(noun)

Nominative, feminine, singular of saṃyogasattā

saṁyogasattā - the existence or state of conjunction/combination

Compound type : tatpuruṣa (saṃyoga+sattā)

• saṃyoga – conjunction, union, combination, contact
  noun (masculine)
  From verb root √yuj (to join) with prefix sam-
  Prefix: sam
  Root: √yuj (class 7)
• sattā – existence, being, reality, presence
  noun (feminine)
  Derived from 'sat' (existent, being) with suffix '-tā' (state of being)
  Root: √as (class 2)

एव (eva) - only, indeed, just, very

(indeclinable)

स्वात्मज्ञानप्रकाशिनी (svātmajñānaprakāśinī) - illuminating one's own self-knowledge, revealing one's own true nature

(adjective)

Nominative, feminine, singular of svātmajñānaprakāśin

svātmajñānaprakāśin - illuminator of one's own self-knowledge

Compound type : tatpuruṣa (sva+ātman+jñāna+prakāśin)

• sva – one's own, self
  pronoun
• ātman – self, soul, spirit, essence (ātman)
  noun (masculine)
• jñāna – knowledge, wisdom, cognition
  noun (neuter)
  From verb root √jñā (to know)
  Root: √jñā (class 9)
• prakāśin – illuminating, shining, manifesting, revealing
  adjective (masculine)
  Agent Noun / Adjective
  Derived from verb root √kāś (to shine) with prefix pra- and suffix -in
  Prefix: pra
  Root: √kāś (class 1)