योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-153, verse-3

ततस्तपस्विचर्याणामात्मज्ञानबुभुत्सया ।
मध्ये स स्वप्नजिज्ञासुः प्रक्ष्यति स्वप्नसंकथाम् ॥ ३ ॥

tatastapasvicaryāṇāmātmajñānabubhutsayā ,
madhye sa svapnajijñāsuḥ prakṣyati svapnasaṃkathām 3

3. tataḥ tapasvi-caryāṇām ātmajñāna-bubhutsayā | madhye
saḥ svapna-jijñāsuḥ prākṣyati svapna-saṅkathām ||

3. tataḥ ātmajñāna-bubhutsayā,
tapasvi-caryāṇām madhye,
saḥ svapna-jijñāsuḥ (san),
svapna-saṅkathām prākṣyati

3. Then, amidst the ascetics' practices, driven by a desire for knowledge of the Self (ātman), he, curious about dreams, will inquire about the discourse on dreams.

Words meanings summery:

• ततः (tataḥ) - then (then, thereafter, from that)

• तपस्वि-चर्याणाम् (tapasvi-caryāṇām) - of the ascetics' practices (of the practices of ascetics/sages)

• आत्मज्ञान-बुभुत्सया (ātmajñāna-bubhutsayā) - driven by a desire for knowledge of the Self (ātman) (by the desire to know the Self (ātman))

• मध्ये (madhye) - in the midst (in the middle, among, in the midst)

• सः (saḥ) - he (he, that)

• स्वप्न-जिज्ञासुः (svapna-jijñāsuḥ) - curious about dreams (desirous of knowing about dreams, curious about dreams)

• प्राक्ष्यति (prākṣyati) - will inquire (will ask, will inquire)

• स्वप्न-सङ्कथाम् (svapna-saṅkathām) - the discourse on dreams (discourse on dreams, story about dreams)

Words meanings and morphology

ततः (tataḥ) - then (then, thereafter, from that)

(indeclinable)

तपस्वि-चर्याणाम् (tapasvi-caryāṇām) - of the ascetics' practices (of the practices of ascetics/sages)

(noun)

Genitive, feminine, plural of tapasvi-caryā

tapasvi-caryā - practices of ascetics, conduct of hermits

Compound type : ṣaṣṭhī-tatpuruṣa (tapasvin+caryā)

• tapasvin – ascetic, hermit, one who practices austerities
  noun (masculine)
  Root: tapas
• caryā – practice, conduct, observance, ritual
  noun (feminine)
  Root: car

आत्मज्ञान-बुभुत्सया (ātmajñāna-bubhutsayā) - driven by a desire for knowledge of the Self (ātman) (by the desire to know the Self (ātman))

(noun)

Instrumental, feminine, singular of ātmajñāna-bubhutsā

ātmajñāna-bubhutsā - desire for knowledge of the Self

Compound type : ṣaṣṭhī-tatpuruṣa (ātmajñāna+bubhutsā)

• ātmajñāna – knowledge of the Self
  noun (neuter)
• bubhutsā – desire to know, curiosity
  noun (feminine)
  Desiderative noun
  Derived from the desiderative stem of the root √budh.
  Root: budh (class 1)

मध्ये (madhye) - in the midst (in the middle, among, in the midst)

(noun)

Locative, neuter, singular of madhya

madhya - middle, center, midst

सः (saḥ) - he (he, that)

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, she, it

स्वप्न-जिज्ञासुः (svapna-jijñāsuḥ) - curious about dreams (desirous of knowing about dreams, curious about dreams)

(adjective)

Nominative, masculine, singular of svapna-jijñāsu

svapna-jijñāsu - desirous of knowing about dreams

Compound type : ṣaṣṭhī-tatpuruṣa (svapna+jijñāsu)

• svapna – dream, sleep
  noun (masculine)
  Root: svap
• jijñāsu – desirous of knowing, inquisitive, curious
  adjective (masculine)
  Desiderative agent noun
  Derived from the desiderative stem of the root √jñā ('to know').
  Root: jñā (class 9)

प्राक्ष्यति (prākṣyati) - will inquire (will ask, will inquire)

(verb)

3rd person , singular, active, future (lṛṭ) of √prach

Future tense verb

Future tense, 3rd person singular, active voice of the root √prach. Often with prefix pra.

Prefix: pra

Root: prach (class 6)

स्वप्न-सङ्कथाम् (svapna-saṅkathām) - the discourse on dreams (discourse on dreams, story about dreams)

(noun)

Accusative, feminine, singular of svapna-saṅkathā

svapna-saṅkathā - discourse on dreams, story about dreams

Compound type : ṣaṣṭhī-tatpuruṣa (svapna+saṅkathā)

• svapna – dream, sleep
  noun (masculine)
  Root: svap
• saṅkathā – conversation, discourse, tale, narrative
  noun (feminine)
  Prefix: sam
  Root: kath