योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-32, verse-23

यदाङ्गसंविदां वातस्पन्दशक्तिः प्रमोषतः ।
न करोत्यनुसंधानं कुष्ठी स्पन्दैषणं यथा ॥ २३ ॥

yadāṅgasaṃvidāṃ vātaspandaśaktiḥ pramoṣataḥ ,
na karotyanusaṃdhānaṃ kuṣṭhī spandaiṣaṇaṃ yathā 23

23. yadā aṅgasaṃvidām vātaspandaśaktiḥ pramoṣataḥ na
karoti anusandhānam kuṣṭhī spandaiṣaṇam yathā

23. yadā aṅgasaṃvidām vātaspandaśaktiḥ pramoṣataḥ
anusandhānam na karoti yathā kuṣṭhī spandaiṣaṇam

23. When, due to the loss of the body's vital energetic power of sensation, one fails to exercise discernment (anusandhānam), just as a leper does not experience the perception of movement.

Words meanings summery:

• यदा (yadā) - when

• अङ्गसंविदाम् (aṅgasaṁvidām) - of the body-awareness, of the consciousness of the limbs

• वातस्पन्दशक्तिः (vātaspandaśaktiḥ) - power of vital air's vibration/movement

• प्रमोषतः (pramoṣataḥ) - due to loss, from destruction, from removal

• न (na) - not

• करोति (karoti) - does, makes, performs

• अनुसन्धानम् (anusandhānam) - investigation, discernment, awareness, continuous application

• कुष्ठी (kuṣṭhī) - a leper, one suffering from leprosy

• स्पन्दैषणम् (spandaiṣaṇam) - perception of sensation/movement, desire for sensation

• यथा (yathā) - just as, as, for example

Words meanings and morphology

यदा (yadā) - when

(indeclinable)

From pronoun yad.

अङ्गसंविदाम् (aṅgasaṁvidām) - of the body-awareness, of the consciousness of the limbs

(noun)

Genitive, feminine, plural of aṅgasaṃvid

aṅgasaṁvid - body-awareness, consciousness of the limbs/body

Compound.

Compound type : tatpuruṣa (aṅga+saṃvid)

• aṅga – limb, body, part
  noun (neuter)
• saṃvid – knowledge, consciousness, awareness
  noun (feminine)
  From sam-vid (to know together).
  Prefix: sam
  Root: vid

वातस्पन्दशक्तिः (vātaspandaśaktiḥ) - power of vital air's vibration/movement

(noun)

Nominative, feminine, singular of vātaspandaśakti

vātaspandaśakti - the power of movement of the vital air (vāta), energy of pulsation (śakti)

Compound.

Compound type : tatpuruṣa (vāta+spanda+śakti)

• vāta – wind, air, vital air (vāta), life-breath
  noun (masculine)
  Root: vā (class 2)
• spanda – vibration, pulsation, movement, sensation
  noun (verbal noun) (masculine)
  Verbal noun
  From root spad (to tremble, vibrate) + ghañ suffix.
  Root: spad (class 1)
• śakti – power, energy, capability (śakti)
  noun (feminine)
  From root śak (to be able).
  Root: śak (class 5)

Note: Subject of the implied bhū or hīyate.

प्रमोषतः (pramoṣataḥ) - due to loss, from destruction, from removal

(noun)

Ablative, masculine, singular of pramoṣa

pramoṣa - loss, theft, destruction, removal, disappearance

From pra + root muṣ (to steal, take away) + ghañ suffix.

Prefix: pra

Root: muṣ (class 1)

न (na) - not

(indeclinable)

करोति (karoti) - does, makes, performs

(verb)

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

Present Tense, 3rd Person Singular

From root kṛ (class 8 tanādi), Parasmaipada.

Root: kṛ (class 8)

Note: The subject is implied, often jantuḥ or saḥ.

अनुसन्धानम् (anusandhānam) - investigation, discernment, awareness, continuous application

(noun)

Accusative, neuter, singular of anusandhāna

anusandhāna - investigation, discernment, remembrance, connecting, continuous application, awareness

Verbal noun

From anu + sam + root dhā (to place, put) + lyuṭ suffix.

Prefixes: anu+sam

Root: dhā (class 3)

Note: Object of karoti.

कुष्ठी (kuṣṭhī) - a leper, one suffering from leprosy

(noun)

Nominative, masculine, singular of kuṣṭhin

kuṣṭhin - leper, one afflicted with leprosy

From kuṣṭha (leprosy) + in suffix.

Note: Subject in the analogy.

स्पन्दैषणम् (spandaiṣaṇam) - perception of sensation/movement, desire for sensation

(noun)

Accusative, neuter, singular of spandaiṣaṇa

spandaiṣaṇa - perception of sensation or movement; desire for movement/sensation

Compound. spanda (sensation/movement) + eṣaṇa (seeking/desire/perception).

Compound type : tatpuruṣa (spanda+eṣaṇa)

• spanda – vibration, pulsation, movement, sensation
  noun (verbal noun) (masculine)
  Verbal noun
  From root spad (to tremble, vibrate) + ghañ suffix.
  Root: spad (class 1)
• eṣaṇa – seeking, desiring, perception
  noun (verbal noun) (neuter)
  Verbal noun
  From root iṣ (to wish, desire, seek) + lyuṭ suffix.
  Root: iṣ (class 6)

Note: Object of implied verb (e.g., na vindati).

यथा (yathā) - just as, as, for example

(indeclinable)