योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-51, verse-19

यद्यथा भावयत्याशु तत्तथानुभवत्यलम् ।
सत्यो भवत्वसत्यो वा बालेन निशि यक्षकः ॥ १९ ॥

yadyathā bhāvayatyāśu tattathānubhavatyalam ,
satyo bhavatvasatyo vā bālena niśi yakṣakaḥ 19

19. yat yathā bhāvayati āśu tat tathā anubhavati alam
satyaḥ bhavatu asatyaḥ vā bālena niśi yakṣakaḥ

19. yat yathā āśu bhāvayati tat tathā alam anubhavati
bālena niśi yakṣakaḥ satyaḥ bhavatu vā asatyaḥ

19. Whatever one contemplates or imagines, one quickly and profoundly experiences it in that very way. This is just like a yakṣa, which, whether real or unreal, is experienced by a child in the night.

Words meanings summery:

• यत् (yat) - whatever, which

• यथा (yathā) - as, in whatever way, according to

• भावयति (bhāvayati) - causes to be, imagines, contemplates, experiences

• आशु (āśu) - quickly, swiftly, immediately

• तत् (tat) - that, that (thing)

• तथा (tathā) - so, in that way, thus

• अनुभवति (anubhavati) - experiences, perceives, feels

• अलम् (alam) - enough, sufficient, adequately, profoundly

• सत्यः (satyaḥ) - real, true, existing

• भवतु (bhavatu) - let it be, may it be

• असत्यः (asatyaḥ) - unreal, untrue, non-existent

• वा (vā) - or, either... or

• बालेन (bālena) - by the child

• निशि (niśi) - in the night

• यक्षकः (yakṣakaḥ) - a yakṣa (a type of nature-spirit or demi-god)

Words meanings and morphology

यत् (yat) - whatever, which

(pronoun)

Nominative, neuter, singular of yad

yad - which, what, whatever, that

Note: Refers to the object of contemplation.

यथा (yathā) - as, in whatever way, according to

(indeclinable)

भावयति (bhāvayati) - causes to be, imagines, contemplates, experiences

(verb)

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

Causative present active

From root bhū (to be) in causative form (णिच्)

Root: bhū (class 1)

Note: Used impersonally as 'one contemplates'.

आशु (āśu) - quickly, swiftly, immediately

(indeclinable)

Adverbial use of the adjective 'āśu'.

Note: Modifies 'bhāvayati' and 'anubhavati'.

तत् (tat) - that, that (thing)

(pronoun)

Accusative, neuter, singular of tad

tad - that, he, she, it

Note: Refers to the experienced object.

तथा (tathā) - so, in that way, thus

(indeclinable)

अनुभवति (anubhavati) - experiences, perceives, feels

(verb)

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

Present active

From prefix anu- + root bhū (to be)

Prefix: anu

Root: bhū (class 1)

Note: Used impersonally as 'one experiences'.

अलम् (alam) - enough, sufficient, adequately, profoundly

(indeclinable)

Note: Acts as an intensifier.

सत्यः (satyaḥ) - real, true, existing

(adjective)

Nominative, masculine, singular of satya

satya - real, true, existent, genuine, truth, reality

From sat (being, existing).

Root: as (class 2)

भवतु (bhavatu) - let it be, may it be

(verb)

3rd person , singular, active, imperative (loṭ) of bhū

Imperative active

From root bhū

Root: bhū (class 1)

Note: Refers to the state of the yakṣa.

असत्यः (asatyaḥ) - unreal, untrue, non-existent

(adjective)

Nominative, masculine, singular of asatya

asatya - unreal, untrue, false, non-existent, falsehood

Formed by negation (a-) of satya.

Compound type : Nañ-Tatpuruṣa (a+satya)

• a – not, non-
  indeclinable
  Negative particle
• satya – real, true, existent
  adjective (masculine)
  Root: as (class 2)

वा (vā) - or, either... or

(indeclinable)

बालेन (bālena) - by the child

(noun)

Instrumental, masculine, singular of bāla

bāla - child, boy, young, ignorant, naive

निशि (niśi) - in the night

(noun)

Locative, feminine, singular of niś

niś - night

Root form is 'niś', but declension is irregular.

Note: Refers to the time of the experience.

यक्षकः (yakṣakaḥ) - a yakṣa (a type of nature-spirit or demi-god)

(noun)

Nominative, masculine, singular of yakṣaka

yakṣaka - a yakṣa, a class of semi-divine beings, guardians of wealth

Diminutive or general term for Yakṣa.

Note: The subject in the second part of the verse.