योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-148, verse-21

यावद्भानं किल स्वप्ने तावत्सैव नियन्त्रणा ।
स एव संविद्भानस्य कुर्यान्नियमनं मुनिः ॥ २१ ॥

yāvadbhānaṃ kila svapne tāvatsaiva niyantraṇā ,
sa eva saṃvidbhānasya kuryānniyamanaṃ muniḥ 21

21. yāvat bhānam kila svapne tāvat sā eva niyantraṇā |
saḥ eva saṃvid-bhānasya kuryāt niyamanam muniḥ ||

21. kila yāvat svapne bhānam tāvat sā eva niyantraṇā
saḥ muniḥ eva saṃvid-bhānasya niyamanam kuryāt

21. Indeed, as long as there is manifestation in a dream, that much itself constitutes control (niyantraṇā). A sage (muni) should implement that very regulation (niyamana) of the manifestation of consciousness (saṃvid-bhāna).

Words meanings summery:

• यावत् (yāvat) - as long as (as much as, as long as, until, while)

• भानम् (bhānam) - manifestation (of objects/phenomena) (manifestation, appearance, light, splendor)

• किल (kila) - indeed (emphatic particle) (indeed, certainly, even, it is said)

• स्वप्ने (svapne) - in a dream, in sleep

• तावत् (tāvat) - that much, to that extent (so much, so far, to that extent)

• सा (sā) - that (referring to niyantraṇā) (she, that (feminine))

• एव (eva) - itself, precisely (only, just, indeed, precisely)

• नियन्त्रणा (niyantraṇā) - control, constraint (niyantraṇā) (control, restraint, regulation, limitation)

• सः (saḥ) - that (referring to muni) (he, that (masculine))

• एव (eva) - only, just, indeed, precisely

• संविद्-भानस्य (saṁvid-bhānasya) - of the manifestation of consciousness

• कुर्यात् (kuryāt) - should implement (should do, should make, should perform)

• नियमनम् (niyamanam) - regulation (niyamana) (regulation, control, restraint, discipline)

• मुनिः (muniḥ) - sage, ascetic, silent one

Words meanings and morphology

यावत् (yāvat) - as long as (as much as, as long as, until, while)

(indeclinable)

भानम् (bhānam) - manifestation (of objects/phenomena) (manifestation, appearance, light, splendor)

(noun)

Nominative, neuter, singular of bhāna

bhāna - light, splendor, appearance, manifestation, perception

Present Active Participle (derived as a noun)

From root bhā (to shine, appear) + lyuṭ (nominalizer)

Root: bhā (class 2)

Note: Can also be accusative singular.

किल (kila) - indeed (emphatic particle) (indeed, certainly, even, it is said)

(indeclinable)

स्वप्ने (svapne) - in a dream, in sleep

(noun)

Locative, masculine, singular of svapna

svapna - dream, sleep

Root: svap (class 2)

तावत् (tāvat) - that much, to that extent (so much, so far, to that extent)

(indeclinable)

सा (sā) - that (referring to niyantraṇā) (she, that (feminine))

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

एव (eva) - itself, precisely (only, just, indeed, precisely)

(indeclinable)

नियन्त्रणा (niyantraṇā) - control, constraint (niyantraṇā) (control, restraint, regulation, limitation)

(noun)

Nominative, feminine, singular of niyantraṇā

niyantraṇā - control, restraint, regulation, limitation

From ni + yam (to control) + lyuṭ (nominalizer), feminine form

Prefix: ni

Root: yam (class 1)

सः (saḥ) - that (referring to muni) (he, that (masculine))

(pronoun)

Nominative, masculine, singular of tad

tad - that, he, it

एव (eva) - only, just, indeed, precisely

(indeclinable)

संविद्-भानस्य (saṁvid-bhānasya) - of the manifestation of consciousness

(noun)

Genitive, neuter, singular of saṃvid-bhāna

saṁvid-bhāna - manifestation of consciousness, conscious appearance

Tatpuruṣa compound: saṃvid (consciousness) + bhāna (manifestation)

Compound type : ṣaṣṭhī-tatpuruṣa (saṃvid+bhāna)

• saṃvid – consciousness, knowledge, understanding, agreement
  noun (feminine)
  From sam + vid (to know) + kvip
  Prefix: sam
  Root: vid (class 2)
• bhāna – light, splendor, appearance, manifestation, perception
  noun (neuter)
  Present Active Participle (derived as a noun)
  From root bhā (to shine, appear) + lyuṭ (nominalizer)
  Root: bhā (class 2)

कुर्यात् (kuryāt) - should implement (should do, should make, should perform)

(verb)

3rd person , singular, active, optative (vidhi liṅ) of kṛ

Optative Active

3rd person singular optative active of root kṛ (to do)

Root: kṛ (class 8)

नियमनम् (niyamanam) - regulation (niyamana) (regulation, control, restraint, discipline)

(noun)

Accusative, neuter, singular of niyamana

niyamana - regulation, control, restraint, discipline

From ni + yam (to control) + lyuṭ (nominalizer)

Prefix: ni

Root: yam (class 1)

मुनिः (muniḥ) - sage, ascetic, silent one

(noun)

Nominative, masculine, singular of muni

muni - sage, ascetic, silent one, seer