योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-85, verse-18

संविन्मात्रैकधर्मित्वात्काकतालीययोगतः ।
संविद्देवी शिवं स्पृष्ट्वा तन्मयीव भवत्यलम् ॥ १८ ॥

saṃvinmātraikadharmitvātkākatālīyayogataḥ ,
saṃviddevī śivaṃ spṛṣṭvā tanmayīva bhavatyalam 18

18. saṃvit-mātra-eka-dharmitvāt kāka-tālīya-yogataḥ
saṃvit-devī śivam spṛṣṭvā tan-mayī iva bhavati alam

18. saṃvit-mātra-eka-dharmitvāt kāka-tālīya-yogataḥ
saṃvit-devī śivam spṛṣṭvā tan-mayī iva alam bhavati

18. Due to having consciousness as its sole intrinsic nature (dharma), the goddess of consciousness (saṃvit-devī), by a sheer chance occurrence (kāka-tālīya-yoga), becomes as if completely one with Śiva upon coming into contact with him.

Words meanings summery:

• संवित्-मात्र-एक-धर्मित्वात् (saṁvit-mātra-eka-dharmitvāt) - because its intrinsic nature (dharma) is solely pure consciousness (due to having consciousness alone as its sole nature/property)

• काक-तालीय-योगतः (kāka-tālīya-yogataḥ) - by a crow-palm-fruit coincidence, by chance, by a sudden occurrence

• संवित्-देवी (saṁvit-devī) - the goddess of consciousness

• शिवम् (śivam) - the auspicious, supreme reality (Śiva) (Śiva, the auspicious one)

• स्पृष्ट्वा (spṛṣṭvā) - having touched, after touching, having come into contact with

• तन्-मयी (tan-mayī) - consisting of that, identical with that, absorbed in that

• इव (iva) - as if, like, as

• भवति (bhavati) - becomes, is

• अलम् (alam) - sufficiently, completely, indeed, enough

Words meanings and morphology

संवित्-मात्र-एक-धर्मित्वात् (saṁvit-mātra-eka-dharmitvāt) - because its intrinsic nature (dharma) is solely pure consciousness (due to having consciousness alone as its sole nature/property)

(noun)

Ablative, neuter, singular of saṃvit-mātra-eka-dharmitva

saṁvit-mātra-eka-dharmitva - the state of having consciousness alone as its sole nature

Compound type : tatpurusha (saṃvit+mātra+eka+dharma+tva)

• saṃvit – consciousness, knowledge, understanding
  noun (feminine)
• mātra – merely, only, measure
  adjective (neuter)
• eka – one, sole, unique
  adjective (masculine)
• dharma – intrinsic nature, duty, constitution, law
  noun (masculine)
• tva – suffix forming abstract nouns (state of being)
  suffix
  Taddhita suffix indicating 'the state of being' or 'nature of'

काक-तालीय-योगतः (kāka-tālīya-yogataḥ) - by a crow-palm-fruit coincidence, by chance, by a sudden occurrence

(noun)

Ablative, masculine, singular of kāka-tālīya-yoga

kāka-tālīya-yoga - the coincidence of a crow landing on a palm tree and a ripe fruit falling simultaneously, meaning a sudden, unexpected coincidence

Compound type : tatpurusha (kāka+tālīya+yoga)

• kāka – crow
  noun (masculine)
• tālīya – relating to a palm tree/fruit (tāla)
  adjective (masculine)
  Derived from tāla (palm tree)
• yoga – connection, conjunction, union, coincidence (yoga)
  noun (masculine)

संवित्-देवी (saṁvit-devī) - the goddess of consciousness

(noun)

Nominative, feminine, singular of saṃvit-devī

saṁvit-devī - the goddess of consciousness

Compound type : karmadharaya (saṃvit+devī)

• saṃvit – consciousness, knowledge
  noun (feminine)
• devī – goddess
  noun (feminine)

शिवम् (śivam) - the auspicious, supreme reality (Śiva) (Śiva, the auspicious one)

(noun)

Accusative, masculine, singular of śiva

śiva - auspicious, benevolent; noun: Śiva

स्पृष्ट्वा (spṛṣṭvā) - having touched, after touching, having come into contact with

(indeclinable)

Absolutive (Gerund)

Formed from root spṛś (to touch)

Root: spṛś

तन्-मयी (tan-mayī) - consisting of that, identical with that, absorbed in that

(adjective)

Nominative, feminine, singular of tan-mayī

tan-mayī - consisting of that, identical with that (feminine)

Compound type : tatpurusha (tad+mayī)

• tad – that
  pronoun (neuter)
• mayī – consisting of, full of (feminine of maya)
  suffix (feminine)
  Taddhita suffix -maya, feminine form.

इव (iva) - as if, like, as

(indeclinable)

भवति (bhavati) - becomes, is

(verb)

3rd person , singular, active, present indicative (laṭ) of bhū

Root: bhū (class 1)

अलम् (alam) - sufficiently, completely, indeed, enough

(indeclinable)