योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-3, verse-21

प्रवाहपतितं सर्वं स्पन्दते शान्तमानसम् ।
तेषां कर्मेन्द्रियाण्येवमर्धसंसुप्तबालवत् ॥ २१ ॥

pravāhapatitaṃ sarvaṃ spandate śāntamānasam ,
teṣāṃ karmendriyāṇyevamardhasaṃsuptabālavat 21

21. pravāha-patitam sarvam spandate śānta-mānasam
teṣām karma-indriyāṇi evam ardha-saṃsupta-bālavat

21. pravāha-patitam sarvam spandate śānta-mānasam.
evam teṣām karma-indriyāṇi ardha-saṃsupta-bālavat.

21. Everything that falls into the current moves spontaneously, while the mind remains tranquil. In this way, their organs of action (karmendriyas) function like those of a half-asleep child.

Words meanings summery:

• प्रवाह-पतितम् (pravāha-patitam) - that which is carried along by the natural course of events (fallen into the current, subject to the flow)

• सर्वम् (sarvam) - everything (in the world of action and experience) (all, everything, the whole)

• स्पन्दते (spandate) - it acts spontaneously, it is in motion (it vibrates, it moves, it stirs, it quivers)

• शान्त-मानसम् (śānta-mānasam) - while the mind is tranquil (adverbial sense) (tranquil-minded, a tranquil mind)

• तेषाम् (teṣām) - of those (wise ones from the previous verse) (of them, their)

• कर्म-इन्द्रियाणि (karma-indriyāṇi) - the faculties for performing actions (e.g., hands, feet, voice) (organs of action, action senses)

• एवम् (evam) - in this same spontaneous and detached manner (thus, in this manner, so)

• अर्ध-संसुप्त-बालवत् (ardha-saṁsupta-bālavat) - functioning spontaneously and without full conscious intention, like a child half-asleep (like a half-asleep child)

Words meanings and morphology

प्रवाह-पतितम् (pravāha-patitam) - that which is carried along by the natural course of events (fallen into the current, subject to the flow)

(participle)

Nominative, neuter, singular of pravāha-patita

pravāha-patita - fallen into the stream, caught in the flow

Compound of 'pravāha' (current, flow) and 'patita' (fallen).

Compound type : tatpuruṣa (pravāha+patita)

• pravāha – stream, current, flow
  noun (masculine)
  From root vah (to carry) with prefix pra
  Prefix: pra
  Root: vah (class 1)
• patita – fallen, descended, occurred
  participle (masculine)
  Past Passive Participle
  From root pat (to fall)
  Root: pat (class 1)

Note: Subject of 'spandate'.

सर्वम् (sarvam) - everything (in the world of action and experience) (all, everything, the whole)

(pronoun/adjective)

स्पन्दते (spandate) - it acts spontaneously, it is in motion (it vibrates, it moves, it stirs, it quivers)

(verb)

3rd person , singular, middle, present (laṭ) of spand

Root 'spand'.

Root: spad (class 1)

Note: The subject is 'pravāha-patitam sarvam'.

शान्त-मानसम् (śānta-mānasam) - while the mind is tranquil (adverbial sense) (tranquil-minded, a tranquil mind)

(adjective/noun)

Compound type : bahuvrīhi (śānta+mānasa)

• śānta – tranquil, calm, peaceful
  adjective (masculine)
  Past Passive Participle
  From root 'śam'
  Root: śam (class 4)
• mānasa – relating to the mind, mental, mind
  adjective/noun (neuter)
  Derived from 'manas' (mind)

तेषाम् (teṣām) - of those (wise ones from the previous verse) (of them, their)

(pronoun)

Genitive, masculine, plural of tad

tad - that, those

Note: Possessive, governing 'karma-indriyāṇi'.

कर्म-इन्द्रियाणि (karma-indriyāṇi) - the faculties for performing actions (e.g., hands, feet, voice) (organs of action, action senses)

(noun)

Nominative, neuter, plural of karma-indriya

karma-indriya - organ of action, action sense

Compound of 'karma' (action) and 'indriya' (sense organ).

Compound type : tatpuruṣa (karma+indriya)

• karma – action, deed, ritual
  noun (neuter)
  Root: kṛ (class 8)
• indriya – sense organ, faculty
  noun (neuter)
  Related to Indra

Note: Subject of an implied verb (e.g., 'function', 'act').

एवम् (evam) - in this same spontaneous and detached manner (thus, in this manner, so)

(indeclinable)

अर्ध-संसुप्त-बालवत् (ardha-saṁsupta-bālavat) - functioning spontaneously and without full conscious intention, like a child half-asleep (like a half-asleep child)

(indeclinable)

Formed by adding the suffix '-vat' (like, as) to the compound 'ardha-saṃsupta-bāla'.

Compound type : tatpuruṣa (ardha+saṃsupta+bāla)

• ardha – half, partial
  adjective (neuter)
• saṃsupta – fast asleep, deeply sleeping
  participle (masculine)
  Past Passive Participle
  From root svap (to sleep) with prefix sam
  Prefix: sam
  Root: svap (class 2)
• bāla – child, young boy, ignorant person
  noun (masculine)

Note: Functions adverbially, indicating comparison.