योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-25, verse-63

प्राणक्षयस्योपान्तस्थमपानक्षयकोटिगम् ।
अपानप्राणयोर्मध्यं चिदात्मानमुपास्महे ॥ ६३ ॥

prāṇakṣayasyopāntasthamapānakṣayakoṭigam ,
apānaprāṇayormadhyaṃ cidātmānamupāsmahe 63

63. prāṇakṣayasya upāntastham apānakṣayakoṭigam
apānaprāṇayoḥ madhyam cidātmānam upāsmahe

63. prāṇakṣayasya upāntastham apānakṣayakoṭigam
apānaprāṇayoḥ madhyam cidātmānam upāsmahe

63. We worship the conscious Self (cidātman) as that which is situated near the cessation of the vital breath (prāṇa), reaching the extreme limit of the exhalation's (apāna) cessation, and as the middle point between exhalation (apāna) and vital breath (prāṇa).

Words meanings summery:

• प्राणक्षयस्य (prāṇakṣayasya) - of the cessation of vital breath, of the decay of prāṇa

• उपान्तस्थम् (upāntastham) - situated near the end, at the border

• अपानक्षयकोटिगम् (apānakṣayakoṭigam) - reaching the pinnacle of exhalation's cessation

• अपानप्राणयोः (apānaprāṇayoḥ) - of exhalation and vital breath (dual genitive/locative)

• मध्यम् (madhyam) - the middle, intermediate, center

• चिदात्मानम् (cidātmānam) - the conscious Self, the soul of consciousness

• उपास्महे (upāsmahe) - we worship, we serve, we meditate on

Words meanings and morphology

प्राणक्षयस्य (prāṇakṣayasya) - of the cessation of vital breath, of the decay of prāṇa

(noun)

Genitive, masculine, singular of prāṇakṣaya

prāṇakṣaya - cessation of vital breath, decay of prāṇa, loss of life

Compound type : tatpuruṣa (prāṇa+kṣaya)

• prāṇa – vital breath, life
  noun (masculine)
• kṣaya – cessation, decay, destruction, loss, decline
  noun (masculine)
  Derived from √kṣi (to destroy, diminish)
  Root: kṣi (class 1)

उपान्तस्थम् (upāntastham) - situated near the end, at the border

(adjective)

Accusative, neuter, singular of upāntastha

upāntastha - situated near the end, standing at the edge/border, proximate

Compound type : tatpuruṣa (upānta+stha)

• upānta – near the end, border, vicinity
  noun (neuter)
• stha – standing, situated, residing
  adjective (masculine)
  Derived from √sthā (to stand)
  Root: sthā (class 1)

अपानक्षयकोटिगम् (apānakṣayakoṭigam) - reaching the pinnacle of exhalation's cessation

(adjective)

Accusative, neuter, singular of apānakṣayakoṭiga

apānakṣayakoṭiga - reaching the highest point of apāna's cessation, extending to the end of exhalation's decay

Compound type : tatpuruṣa (apāna+kṣaya+koṭi+ga)

• apāna – exhalation, downward vital air
  noun (masculine)
• kṣaya – cessation, decay, destruction, loss
  noun (masculine)
  Derived from √kṣi (to destroy, diminish)
  Root: kṣi (class 1)
• koṭi – tip, point, pinnacle, extreme limit, end
  noun (feminine)
• ga – going, moving, reaching, resorting to
  adjective (masculine)
  Derived from √gam (to go)
  Root: gam (class 1)

अपानप्राणयोः (apānaprāṇayoḥ) - of exhalation and vital breath (dual genitive/locative)

(noun)

Genitive, masculine, dual of apānaprāṇa

apānaprāṇa - exhalation and vital breath (collectively)

Compound type : dvandva (apāna+prāṇa)

• apāna – exhalation, downward vital air
  noun (masculine)
• prāṇa – vital breath, life
  noun (masculine)

मध्यम् (madhyam) - the middle, intermediate, center

(noun)

Accusative, neuter, singular of madhya

madhya - middle, center, intermediate, impartial

चिदात्मानम् (cidātmānam) - the conscious Self, the soul of consciousness

(noun)

Accusative, masculine, singular of cidātman

cidātman - conscious Self, soul of consciousness

Compound type : tatpuruṣa (cit+ātman)

• cit – consciousness, thought, intellect
  noun (feminine)
• ātman – Self, soul, spirit, ego
  noun (masculine)

उपास्महे (upāsmahe) - we worship, we serve, we meditate on

(verb)

1st person , plural, middle, present indicative (laṭ) of upās

Prefix: upa

Root: ās (class 2)