योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-85, verse-21

चितिः शिवेच्छा सा देवं तमेवासाद्य शाम्यति ।
जन्मस्थानशिलां प्राप्य तीक्ष्णधारा यथायसी ॥ २१ ॥

citiḥ śivecchā sā devaṃ tamevāsādya śāmyati ,
janmasthānaśilāṃ prāpya tīkṣṇadhārā yathāyasī 21

21. citiḥ śivecchā sā devam tam eva āsādya śāmyati
janmasthānaśilām prāpya tīkṣṇadhārā yathā ayasī

21. citiḥ śivecchā sā devam tam eva āsādya śāmyati; yathā
ayasī tīkṣṇadhārā janmasthānaśilām prāpya (śāmyati)

21. Consciousness (citiḥ), which is the will of Śiva (śivecchā), having reached that very deity, becomes tranquil, just as a sharp iron blade, having reached the grindstone of its origin, becomes calm.

Words meanings summery:

• चितिः (citiḥ) - the divine consciousness or will (consciousness, pure consciousness, knowledge)

• शिवेच्छा (śivecchā) - the divine will originating from Śiva (the will of Śiva, Śiva's desire)

• सा (sā) - she (consciousness/will) (she, it (feminine))

• देवम् (devam) - the deity, referring to Śiva (god, deity, divine one)

• तम् (tam) - that (deity, i.e., Śiva) (him, that (masculine accusative))

• एव (eva) - that very (deity) (only, just, indeed)

• आसाद्य (āsādya) - having reached or attained (the deity) (having reached, having approached, having obtained)

• शाम्यति (śāmyati) - attains a state of tranquility and cessation of activity (becomes calm, tranquil, ceases, is pacified)

• जन्मस्थानशिलाम् (janmasthānaśilām) - the grindstone where it was originally sharpened or came from (a stone of the birthplace, grindstone)

• प्राप्य (prāpya) - having reached (the grindstone) (having reached, having obtained, having attained)

• तीक्ष्णधारा (tīkṣṇadhārā) - a sharp edge or blade (of an iron tool) (sharp-edged, sharp-bladed)

• यथा (yathā) - just as (introduces a simile) (as, just as, according to)

• अयसी (ayasī) - an iron (blade) (made of iron, iron (feminine))

Words meanings and morphology

चितिः (citiḥ) - the divine consciousness or will (consciousness, pure consciousness, knowledge)

(noun)

Nominative, feminine, singular of citi

citi - consciousness, knowledge, intelligence, understanding, perception

From cit + ti

Root: cit (class 1)

शिवेच्छा (śivecchā) - the divine will originating from Śiva (the will of Śiva, Śiva's desire)

(noun)

Nominative, feminine, singular of śivecchā

śivecchā - the will of Śiva, desire of Śiva

From śiva + icchā

Compound type : tatpuruṣa (śiva+icchā)

• śiva – auspicious, benevolent, name of a deity (Śiva)
  proper noun (masculine)
• icchā – desire, wish, will
  noun (feminine)
  Root: iṣ (class 6)

Note: This compound is a Genitive Tatpuruṣa, meaning 'will of Śiva'.

सा (sā) - she (consciousness/will) (she, it (feminine))

(pronoun)

Nominative, feminine, singular of tad

tad - that, she, it

Note: Refers to citiḥ / śivecchā.

देवम् (devam) - the deity, referring to Śiva (god, deity, divine one)

(noun)

Accusative, masculine, singular of deva

deva - god, deity, divine, celestial

तम् (tam) - that (deity, i.e., Śiva) (him, that (masculine accusative))

(pronoun)

Accusative, masculine, singular of tad

tad - that, him, it

Note: Refers to devam (deity).

एव (eva) - that very (deity) (only, just, indeed)

(indeclinable)

Note: An emphatic particle.

आसाद्य (āsādya) - having reached or attained (the deity) (having reached, having approached, having obtained)

(indeclinable)

absolutive/gerund

Absolutive form from root sad with prefix ā

Prefix: ā

Root: sad (class 1)

Note: Indeclinable past participle (absolutive/gerund).

शाम्यति (śāmyati) - attains a state of tranquility and cessation of activity (becomes calm, tranquil, ceases, is pacified)

(verb)

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

present active

Present active 3rd singular from root śam

Root: śam (class 4)

जन्मस्थानशिलाम् (janmasthānaśilām) - the grindstone where it was originally sharpened or came from (a stone of the birthplace, grindstone)

(noun)

Accusative, feminine, singular of janmasthānaśilā

janmasthānaśilā - birthplace stone, grindstone

From janmasthāna + śilā

Compound type : tatpuruṣa (janmasthāna+śilā)

• janmasthāna – birthplace, origin
  noun (neuter)
  From janman + sthāna
• śilā – stone, rock
  noun (feminine)

Note: Refers to the grindstone or whetstone.

प्राप्य (prāpya) - having reached (the grindstone) (having reached, having obtained, having attained)

(indeclinable)

absolutive/gerund

Absolutive form from root āp with prefix pra

Prefix: pra

Root: āp (class 5)

Note: Indeclinable past participle (absolutive/gerund).

तीक्ष्णधारा (tīkṣṇadhārā) - a sharp edge or blade (of an iron tool) (sharp-edged, sharp-bladed)

(noun)

Nominative, feminine, singular of tīkṣṇadhārā

tīkṣṇadhārā - sharp-edged, sharp blade

From tīkṣṇa + dhārā

Compound type : karmadhāraya (tīkṣṇa+dhārā)

• tīkṣṇa – sharp, keen, pungent, fierce
  adjective (feminine)
• dhārā – edge, blade, stream, current
  noun (feminine)

Note: Refers to the blade itself, or 'that which has a sharp edge'.

यथा (yathā) - just as (introduces a simile) (as, just as, according to)

(indeclinable)

Note: Correlative adverb.

अयसी (ayasī) - an iron (blade) (made of iron, iron (feminine))

(adjective)

Nominative, feminine, singular of ayasī

ayasī - made of iron, iron (feminine)

Derived from ayas + ī (feminine suffix)

Note: Qualifies 'tīkṣṇadhārā'.