योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-128, verse-17

अग्निं वायौ समावेश्य वायुं च नभसि क्षिपेत् ।
नभश्च महदाकाशे समस्तोत्पत्तिकारणे ॥ १७ ॥

agniṃ vāyau samāveśya vāyuṃ ca nabhasi kṣipet ,
nabhaśca mahadākāśe samastotpattikāraṇe 17

17. agnim vāyau samāveśya vāyum ca nabhasi kṣipet
nabhaḥ ca mahadākāśe samastotpattikāraṇe

17. agnim vāyau samāveśya,
vāyum ca nabhasi kṣipet.
ca nabhaḥ samastotpattikāraṇe mahadākāśe (kṣipet).

17. Merging fire (agni) into air (vāyu), and then casting air (vāyu) into space (nabhas), one should then place space (nabhas) into the great space (mahadākāśa), which is the cause of all manifestation.

Words meanings summery:

• अग्निम् (agnim) - fire

• वायौ (vāyau) - into air, in air, into wind

• समावेश्य (samāveśya) - having caused to enter, having merged

• वायुम् (vāyum) - air, wind

• च (ca) - and, also

• नभसि (nabhasi) - into space, in the sky, in ether

• क्षिपेत् (kṣipet) - one should cast, should place, should throw

• नभः (nabhaḥ) - space, sky, ether

• च (ca) - and, also

• महदाकाशे (mahadākāśe) - into the great space, in the great ether

• समस्तोत्पत्तिकारणे (samastotpattikāraṇe) - in the cause of all manifestation/origin

Words meanings and morphology

अग्निम् (agnim) - fire

(noun)

Accusative, masculine, singular of agni

agni - fire

वायौ (vāyau) - into air, in air, into wind

(noun)

Locative, masculine, singular of vāyu

vāyu - air, wind

समावेश्य (samāveśya) - having caused to enter, having merged

(indeclinable)

Absolutive (gerund)

Derived from root 'viś' (to enter) with prefixes 'sam-' and 'ā-'.

Prefixes: sam+ā

Root: viś (class 6)

वायुम् (vāyum) - air, wind

(noun)

Accusative, masculine, singular of vāyu

vāyu - air, wind

च (ca) - and, also

(indeclinable)

नभसि (nabhasi) - into space, in the sky, in ether

(noun)

Locative, neuter, singular of nabhas

nabhas - space, sky, ether

क्षिपेत् (kṣipet) - one should cast, should place, should throw

(verb)

3rd person , singular, active, optative (vidhiliṅ) of kṣip

Root: kṣip (class 6)

Note: Implies an instruction or recommendation.

नभः (nabhaḥ) - space, sky, ether

(noun)

Accusative, neuter, singular of nabhas

nabhas - space, sky, ether

च (ca) - and, also

(indeclinable)

महदाकाशे (mahadākāśe) - into the great space, in the great ether

(noun)

Locative, masculine, singular of mahadākāśa

mahadākāśa - great space, great ether

Compound type : karmadhāraya (mahat+ākāśa)

• mahat – great, large
  adjective (neuter)
• ākāśa – space, ether, sky
  noun (masculine)
  Prefix: ā
  Root: kāś (class 1)

Note: Refers to the ultimate cosmic space or ether, often associated with Brahman.

समस्तोत्पत्तिकारणे (samastotpattikāraṇe) - in the cause of all manifestation/origin

(noun)

Locative, neuter, singular of samastotpattikāraṇa

samastotpattikāraṇa - cause of all manifestation/origin

Compound type : tatpuruṣa (samasta+utpatti+kāraṇa)

• samasta – all, whole, collective
  adjective
  Past Passive Participle
  Derived from root 'as' with prefix 'sam-'.
  Prefix: sam
  Root: as (class 4)
• utpatti – origin, production, manifestation
  noun (feminine)
  Derived from root 'pat' with prefix 'ud-'.
  Prefix: ud
  Root: pat (class 1)
• kāraṇa – cause, reason, instrument
  noun (neuter)
  Derived from root 'kṛ'.
  Root: kṛ (class 8)

Note: Qualifies 'mahadākāśa', describing its nature as the ultimate source of existence.