योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-173, verse-28

तस्य कल्पान्तरजनी शिरोरुहतयोदिता ।
प्रकाशतमसी कालक्रियाख्याः स्वाङ्गसंधयः ॥ २८ ॥

tasya kalpāntarajanī śiroruhatayoditā ,
prakāśatamasī kālakriyākhyāḥ svāṅgasaṃdhayaḥ 28

28. tasya kalpa-antara-rajanī śiroruhatayā uditā
prakāśa-tamasī kāla-kriyā-ākhyāḥ svāṅga-saṃdhayaḥ

28. tasya kalpāntarajanī śiroruhatayā uditā (asti).
prakāśa-tamasī kāla-kriyā-ākhyāḥ svāṅga-saṃdhayaḥ (ca santi).

28. The night between cosmic cycles (kalpa) is said to be its hair. Light and darkness, referred to as the activities of time, are the joints of its limbs.

Words meanings summery:

• तस्य (tasya) - of the cosmic being (Virāṭ) (of him, of it)

• कल्प-अन्तर-रजनी (kalpa-antara-rajanī) - the night at the end of a cosmic cycle (kalpa) (the night between cosmic cycles)

• शिरोरुहतया (śiroruhatayā) - in the manner of hair, as hair (by reason of being hair, as hair)

• उदिता (uditā) - described, said to be (risen, appeared, declared, said)

• प्रकाश-तमसी (prakāśa-tamasī) - light and darkness

• काल-क्रिया-आख्याः (kāla-kriyā-ākhyāḥ) - referred to as the activities of time (named as activities of time)

• स्वाङ्ग-संधयः (svāṅga-saṁdhayaḥ) - the joints of its own limbs (joints of its own limbs)

Words meanings and morphology

तस्य (tasya) - of the cosmic being (Virāṭ) (of him, of it)

(pronoun)

Genitive, masculine, singular of tad

tad - that, he, she, it

कल्प-अन्तर-रजनी (kalpa-antara-rajanī) - the night at the end of a cosmic cycle (kalpa) (the night between cosmic cycles)

(noun)

Nominative, feminine, singular of kalpa-antara-rajanī

kalpa-antara-rajanī - night at the end of a kalpa

Compound type : tatpurusha (kalpa+antara+rajanī)

• kalpa – a cosmic cycle, aeon, rule, injunction
  noun (masculine)
  From root √kḷp (to be able, to ordain)
  Root: kḷp (class 1)
• antara – interval, intermediate, inner, other
  noun (neuter)
• rajanī – night
  noun (feminine)

शिरोरुहतया (śiroruhatayā) - in the manner of hair, as hair (by reason of being hair, as hair)

(noun)

Instrumental, feminine, singular of śiroruhatā

śiroruhatā - the state of being hair, hairiness

Compound of śiroruha + suffix -tā (fem. suffix forming abstract noun)

Compound type : tatpurusha (śiroruha+tā)

• śiroruha – hair (lit. 'growing on the head')
  noun (masculine)
  Compound of śiras (head) + ruha (growing)
• tā – suffix denoting 'the state or quality of'
  suffix (feminine)
  Feminine suffix forming abstract nouns.

उदिता (uditā) - described, said to be (risen, appeared, declared, said)

(adjective)

Nominative, feminine, singular of udita

udita - risen, appeared, spoken, said

Past Passive Participle

From root √vad (to speak) with prefix ud-

Prefix: ud

Root: vad (class 1)

प्रकाश-तमसी (prakāśa-tamasī) - light and darkness

(noun)

Nominative, neuter, dual of prakāśa-tamas

prakāśa-tamas - light and darkness

Compound type : dvandva (prakāśa+tamas)

• prakāśa – light, brightness, manifestation
  noun (masculine)
  From prefix pra- + √kāś (to shine)
  Prefix: pra
  Root: kāś (class 1)
• tamas – darkness, ignorance, the quality of inertia
  noun (neuter)

काल-क्रिया-आख्याः (kāla-kriyā-ākhyāḥ) - referred to as the activities of time (named as activities of time)

(adjective)

Nominative, masculine, plural of kāla-kriyā-ākhyā

kāla-kriyā-ākhyā - named as activities of time

Compound type : tatpurusha (kāla-kriyā+ākhyā)

• kāla – time, period, season
  noun (masculine)
• kriyā – action, activity, rite
  noun (feminine)
  From root √kṛ (to do, make)
  Root: kṛ (class 8)
• ākhyā – name, appellation, narrative, named
  adjective (feminine)
  Past Passive Participle
  From prefix ā- + √khyā (to tell, name). Used here as 'named' or 'called'.
  Prefix: ā
  Root: khyā (class 2)

स्वाङ्ग-संधयः (svāṅga-saṁdhayaḥ) - the joints of its own limbs (joints of its own limbs)

(noun)

Nominative, masculine, plural of svāṅga-saṃdhi

svāṅga-saṁdhi - joint of one's own body

Compound type : tatpurusha (sva+aṅga+saṃdhi)

• sva – own, one's own
  pronoun (neuter)
• aṅga – limb, body part, member
  noun (neuter)
• saṃdhi – joint, junction, union, connection
  noun (masculine)
  From prefix sam- + √dhā (to place, put)
  Prefix: sam
  Root: dhā (class 3)