योगवासिष्ठः yogavāsiṣṭhaḥ - book-5, chapter-73, verse-15

नात्मास्त्यनुमया राम न चाप्तवचनादिना ।
सर्वदा सर्वथा सर्वं स प्रत्यक्षोऽनुभूतितः ॥ १५ ॥

nātmāstyanumayā rāma na cāptavacanādinā ,
sarvadā sarvathā sarvaṃ sa pratyakṣo'nubhūtitaḥ 15

15. na ātmā asti anumayā rāma na ca āptavacanādinā
sarvadā sarvathā sarvam saḥ pratyakṣaḥ anubhūtitaḥ

15. O Rāma, the self (ātman) is not known through inference, nor through the words of authoritative texts or persons. That self, being everything in all ways and at all times, is directly perceived through immediate experience (anubhūti).

Words meanings summery:

• न (na) - not (not, no)

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

• अस्ति (asti) - is known (is, exists)

• अनुमया (anumayā) - by inference

• राम (rāma) - O Rāma

• न (na) - nor (not, no)

• च (ca) - nor (and, also)

• आप्तवचनादिना (āptavacanādinā) - by the words of authoritative texts or persons (by the words of trusted persons and so on, by authoritative words etc.)

• सर्वदा (sarvadā) - at all times (always, at all times)

• सर्वथा (sarvathā) - in all ways (in every way, by all means)

• सर्वम् (sarvam) - everything (all, everything)

• सः (saḥ) - That self (that, he)

• प्रत्यक्षः (pratyakṣaḥ) - directly perceived (directly perceptible, evident, before one's eyes)

• अनुभूतितः (anubhūtitaḥ) - through immediate experience (anubhūti) (from experience, by realization)

Words meanings and morphology

न (na) - not (not, no)

(indeclinable)

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

(noun)

Nominative, masculine, singular of ātman

ātman - self, soul, spirit, essence

अस्ति (asti) - is known (is, exists)

(verb)

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

Present active 3rd singular

Root: as (class 2)

अनुमया (anumayā) - by inference

(noun)

Instrumental, feminine, singular of anumā

anumā - inference, conclusion, supposition

Derived from root 'mā' (to measure, perceive) with prefix 'anu-'.

Prefix: anu

Root: mā (class 2)

राम (rāma) - O Rāma

(proper noun)

Vocative, masculine, singular of rāma

rāma - Rāma (name of a celebrated king, hero of the Rāmāyaṇa, an incarnation of Viṣṇu)

Root: ram (class 1)

न (na) - nor (not, no)

(indeclinable)

च (ca) - nor (and, also)

(indeclinable)

आप्तवचनादिना (āptavacanādinā) - by the words of authoritative texts or persons (by the words of trusted persons and so on, by authoritative words etc.)

(noun)

Instrumental, masculine, singular of āptavacanādi

āptavacanādi - words of trusted persons and so on, authoritative statements etc.

Compound type : tatpuruṣa (āptavacana+ādi)

• āptavacana – word of a trusted person, authoritative statement, reliable teaching
  noun (neuter)
• ādi – beginning, starting, first; etcetera
  noun (masculine)
  Root: ad (class 2)

सर्वदा (sarvadā) - at all times (always, at all times)

(indeclinable)

Derived from 'sarva' (all) with the suffix '-dā' (indicating time).

सर्वथा (sarvathā) - in all ways (in every way, by all means)

(indeclinable)

Derived from 'sarva' (all) with the suffix '-thā' (indicating manner).

सर्वम् (sarvam) - everything (all, everything)

(noun)

Nominative, neuter, singular of sarva

sarva - all, every, whole, complete

Note: Here, 'sarvam' implies the self being all-inclusive, or being the totality.

सः (saḥ) - That self (that, he)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

प्रत्यक्षः (pratyakṣaḥ) - directly perceived (directly perceptible, evident, before one's eyes)

(adjective)

Nominative, masculine, singular of pratyakṣa

pratyakṣa - visible, perceptible, direct, immediate (as a means of knowledge)

Compound 'prati' (towards) + 'akṣa' (eye).

Compound type : avyayībhāva (prati+akṣa)

• prati – towards, against, in front of
  indeclinable
• akṣa – eye, sense organ
  noun (neuter)
  Root: aś (class 5)

Note: Qualifies 'saḥ'.

अनुभूतितः (anubhūtitaḥ) - through immediate experience (anubhūti) (from experience, by realization)

(noun)

Ablative, feminine, singular of anubhūti

anubhūti - experience, perception, realization, feeling

Derived from root 'bhū' (to be) with prefix 'anu-'.

Prefix: anu

Root: bhū (class 1)

Note: The suffix '-tas' is used to form an adverbial expressing "from, by means of".