योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-12, verse-7

अचित्प्रसरणं शान्तमस्पन्दीव जलद्रवः ।
निःस्पन्दपवनाकारमाकाशहृदयोपमम् ॥ ७ ॥

acitprasaraṇaṃ śāntamaspandīva jaladravaḥ ,
niḥspandapavanākāramākāśahṛdayopamam 7

7. acit-prasaraṇam śāntam aspandī iva jala-dravaḥ
niḥspanda-pavana-ākāram ākāśa-hṛdaya-upamam

7. acit-prasaraṇam śāntam aspandī iva jala-dravaḥ
niḥspanda-pavana-ākāram ākāśa-hṛdaya-upamam

7. The emanation of non-consciousness (acit) is peaceful and still, like an unmoving current of water. It is akin to the form of motionless wind, resembling the very core of space (ākāśa).

Words meanings summery:

• अचित्-प्रसरणम् (acit-prasaraṇam) - emanation of non-consciousness, spreading of inertness

• शान्तम् (śāntam) - peaceful, calm, tranquil, quieted

• अस्पन्दी (aspandī) - motionless, unmoving, still

• इव (iva) - like, as if, as

• जल-द्रवः (jala-dravaḥ) - liquid water, flowing water

• निःस्पन्द-पवन-आकारम् (niḥspanda-pavana-ākāram) - having the form of motionless wind, like still air

• आकाश-हृदय-उपमम् (ākāśa-hṛdaya-upamam) - resembling the heart/essence of space (ākāśa), like the core of empty space

Words meanings and morphology

अचित्-प्रसरणम् (acit-prasaraṇam) - emanation of non-consciousness, spreading of inertness

(noun)

Nominative, neuter, singular of acit-prasaraṇa

acit-prasaraṇa - emanation of non-consciousness, expansion of inertness

Compound type : tatpurusha (acit+prasaraṇa)

• acit – non-consciousness, inertness, unconscious
  noun (feminine)
• prasaraṇa – spreading, extension, emanation, flow
  noun (neuter)
  verbal noun
  Derived from root sṛ ('to go, move') with upasarga pra and suffix -ana
  Prefix: pra
  Root: sṛ (class 1)

शान्तम् (śāntam) - peaceful, calm, tranquil, quieted

(adjective)

Nominative, neuter, singular of śānta

śānta - peaceful, calm, tranquil, quieted, pacified

Past Passive Participle

Derived from root śam ('to be calm') with suffix -ta

Root: śam (class 4)

अस्पन्दी (aspandī) - motionless, unmoving, still

(adjective)

Nominative, masculine, singular of aspandin

aspandin - motionless, unmoving, still, without vibration

इव (iva) - like, as if, as

(indeclinable)

जल-द्रवः (jala-dravaḥ) - liquid water, flowing water

(noun)

Nominative, masculine, singular of jala-drava

jala-drava - liquid water, flowing water, watery fluid

Compound type : tatpurusha (jala+drava)

• jala – water
  noun (neuter)
• drava – liquid, fluid, flow, state of flowing
  noun (masculine)

निःस्पन्द-पवन-आकारम् (niḥspanda-pavana-ākāram) - having the form of motionless wind, like still air

(adjective)

Nominative, neuter, singular of niḥspanda-pavana-ākāra

niḥspanda-pavana-ākāra - having the form of still wind, resembling motionless air

Compound type : tatpurusha (niḥspanda+pavana+ākāra)

• niḥspanda – motionless, still, without vibration
  adjective
  Prefix: nis
  Root: spand (class 1)
• pavana – wind, air, purifier
  noun (masculine)
• ākāra – form, shape, appearance, aspect
  noun (masculine)

आकाश-हृदय-उपमम् (ākāśa-hṛdaya-upamam) - resembling the heart/essence of space (ākāśa), like the core of empty space

(adjective)

Nominative, neuter, singular of ākāśa-hṛdaya-upama

ākāśa-hṛdaya-upama - resembling the heart or essence of space, like the core of space

Compound type : tatpurusha (ākāśa+hṛdaya+upama)

• ākāśa – space, ether, sky
  noun (masculine)
• hṛdaya – heart, core, essence, mind
  noun (neuter)
• upama – resembling, similar, comparable, likeness
  adjective