योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-99, verse-16

पदार्थाभावसंसिद्धौ वेदनं नोपपद्यते ।
कारणाभावतो नित्यमहंभावस्य नोदयः ॥ १६ ॥

padārthābhāvasaṃsiddhau vedanaṃ nopapadyate ,
kāraṇābhāvato nityamahaṃbhāvasya nodayaḥ 16

16. padārthābhāvasaṃsiddhau vedanam na upapadyate
kāraṇābhāvataḥ nityam ahaṃbhāvasya na udayaḥ

16. padārthābhāvasaṃsiddhau vedanam na upapadyate .
kāraṇābhāvataḥ nityam ahaṃbhāvasya udayaḥ na [asti]

16. When the non-existence of categories (padārtha) is perfectly established, cognition (vedana) does not arise. Similarly, due to the absence of a cause, there is no arising of a permanent 'I'-notion (ahaṃbhāva).

Words meanings summery:

• पदार्थाभावसंसिद्धौ (padārthābhāvasaṁsiddhau) - in the perfect establishment of the absence of categories/objects; in the complete ascertainment of the non-existence of phenomena

• वेदनम् (vedanam) - cognition; perception; feeling; knowledge

• न (na) - not; no

• उपपद्यते (upapadyate) - arises; occurs; becomes possible; is obtained

• कारणाभावतः (kāraṇābhāvataḥ) - due to the absence of a cause; from the non-existence of a cause

• नित्यम् (nityam) - permanent; constant; eternal; always

• अहंभावस्य (ahaṁbhāvasya) - of the 'I'-notion; of the ego-sense

• न (na) - not; no

• उदयः (udayaḥ) - rising; arising; origin; dawn

Words meanings and morphology

पदार्थाभावसंसिद्धौ (padārthābhāvasaṁsiddhau) - in the perfect establishment of the absence of categories/objects; in the complete ascertainment of the non-existence of phenomena

(noun)

Locative, feminine, singular of padārthābhāvasaṃsiddhi

padārthābhāvasaṁsiddhi - perfect establishment of the absence of objects/categories

Compound type : tatpuruṣa (padārtha+abhāva+saṃsiddhi)

• padārtha – meaning of a word, object, category, thing
  noun (masculine)
• abhāva – non-existence, absence, negation
  noun (masculine)
  from a-bhū
  Prefix: a
  Root: bhū (class 1)
• saṃsiddhi – perfection, complete accomplishment, perfect establishment
  noun (feminine)
  verbal noun
  from saṃ-sidh (to accomplish completely)
  Prefix: sam
  Root: sidh (class 4)

Note: Refers to a state or condition.

वेदनम् (vedanam) - cognition; perception; feeling; knowledge

(noun)

Nominative, neuter, singular of vedana

vedana - cognition, perception, feeling, knowledge

verbal noun

from root vid (to know, perceive) with suffix -ana

Root: vid (class 6)

न (na) - not; no

(indeclinable)

उपपद्यते (upapadyate) - arises; occurs; becomes possible; is obtained

(verb)

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

from upa-pad (to go near, to happen)

Prefix: upa

Root: pad (class 4)

Note: Often used in passive sense for "is made possible".

कारणाभावतः (kāraṇābhāvataḥ) - due to the absence of a cause; from the non-existence of a cause

(indeclinable)

Compound type : tatpuruṣa (kāraṇa+abhāva)

• kāraṇa – cause, reason, instrument
  noun (neuter)
  from root kṛ (to do)
  Root: kṛ (class 8)
• abhāva – non-existence, absence
  noun (masculine)
  from a-bhū
  Prefix: a
  Root: bhū (class 1)

Note: Avyaya formed from a noun in the ablative sense.

नित्यम् (nityam) - permanent; constant; eternal; always

(indeclinable)

Note: Functions adverbially, meaning 'always' or 'permanently'.

अहंभावस्य (ahaṁbhāvasya) - of the 'I'-notion; of the ego-sense

(noun)

Genitive, masculine, singular of ahaṃbhāva

ahaṁbhāva - 'I'-notion, ego-sense, sense of individuality

from ahaṃ (I) + bhāva (state of being)

Compound type : tatpuruṣa (aham+bhāva)

• aham – I
  pronoun
  first person singular pronoun
• bhāva – state of being, existence, feeling, nature
  noun (masculine)
  verbal noun
  from root bhū (to be)
  Root: bhū (class 1)

Note: Possessive case, referring to the 'I'-notion.

न (na) - not; no

(indeclinable)

उदयः (udayaḥ) - rising; arising; origin; dawn

(noun)

Nominative, masculine, singular of udaya

udaya - rising, arising, origin, dawn, prosperity

verbal noun

from ud-i (to rise)

Prefix: ud

Root: i (class 2)

Note: Subject of the sentence.