योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-82, verse-33

अन्वयव्यतिरेकेण राक्षस्याः सौहृदं तदा ।
ज्ञात्वा स्थितौ तौ स्वाचान्तावुभावन्तेनिवासिनौ ॥ ३३ ॥

anvayavyatirekeṇa rākṣasyāḥ sauhṛdaṃ tadā ,
jñātvā sthitau tau svācāntāvubhāvantenivāsinau 33

33. anvaya-vyatirekeṇa rākṣasyāḥ sauhṛdam tadā
jñātvā sthitau tau svācāntau ubhau antenivāsinau

33. tadā anvaya-vyatirekeṇa rākṣasyāḥ sauhṛdam jñātvā,
svācāntau ubhau tau antenivāsinau sthitau

33. Then, by the method of agreement and difference, understanding the demoness's affection, those two resident students (antenvāsinau), having purified themselves, remained there.

Words meanings summery:

• अन्वय-व्यतिरेकेण (anvaya-vyatirekeṇa) - by the logical method of agreement and difference (by agreement and difference, by logical induction and deduction)

• राक्षस्याः (rākṣasyāḥ) - of the demoness

• सौहृदम् (sauhṛdam) - friendship, affection, goodwill

• तदा (tadā) - then, at that time

• ज्ञात्वा (jñātvā) - having known, having understood

• स्थितौ (sthitau) - remained (two of them), stood, were

• तौ (tau) - Refers to the two resident students. (those two)

• स्वाचान्तौ (svācāntau) - refers to the ritual purification performed by the two students. (having purified themselves, having rinsed their mouths (after eating))

• उभौ (ubhau) - both

• अन्तेन्वासिनौ (antenvāsinau) - resident students, disciples, pupils

Words meanings and morphology

अन्वय-व्यतिरेकेण (anvaya-vyatirekeṇa) - by the logical method of agreement and difference (by agreement and difference, by logical induction and deduction)

(noun)

Instrumental, masculine, singular of anvaya-vyatireka

anvaya-vyatireka - agreement and difference, positive and negative concomitance, logical induction and deduction

Compound type : dvandva (anvaya+vyatireka)

• anvaya – agreement, concomitance, connection, logical sequence
  noun (masculine)
  Derived from anu-i 'to go after, to follow'
  Prefix: anu
  Root: i (class 2)
• vyatireka – difference, separation, exclusion, contrast, logical disjunction
  noun (masculine)
  Derived from vi-ati-ric 'to be distinct, to separate'
  Prefixes: vi+ati
  Root: ric (class 7)

राक्षस्याः (rākṣasyāḥ) - of the demoness

(noun)

Genitive, feminine, singular of rākṣasī

rākṣasī - demoness, female demon

Feminine form of rākṣasa

सौहृदम् (sauhṛdam) - friendship, affection, goodwill

(noun)

Accusative, neuter, singular of sauhṛda

sauhṛda - friendship, affection, goodwill, cordiality

From suhṛd (friend) + aṇ (taddhita suffix)

Note: Can also be nominative singular neuter. Contextually accusative (object of jñātvā).

तदा (tadā) - then, at that time

(indeclinable)

From pronoun tad + dā (suffix)

ज्ञात्वा (jñātvā) - having known, having understood

(indeclinable)

absolutive (indeclinable participle)

Formed with suffix -tvā

Root: jñā (class 9)

स्थितौ (sthitau) - remained (two of them), stood, were

(adjective)

Nominative, masculine, dual of sthita

sthā - to stand, to remain, to stay

Past Passive Participle

Formed from root sthā + kta suffix

Root: sthā (class 1)

Note: Agrees with tau.

तौ (tau) - Refers to the two resident students. (those two)

(pronoun)

Nominative, masculine, dual of tad

tad - that, he, she, it

स्वाचान्तौ (svācāntau) - refers to the ritual purification performed by the two students. (having purified themselves, having rinsed their mouths (after eating))

(adjective)

Nominative, masculine, dual of svācānta

svācānta - having performed acamana (ritual rinsing), purified

Past Passive Participle

From sva-ācānta. Sva: self + ācānta: purified by rinsing. Formed from su + ā-cam (to sip water) + kta suffix.

Compound type : tatpurusha (sva+ācānta)

• sva – self, own
  pronoun (masculine)
• ācānta – having sipped water, having rinsed the mouth, purified
  adjective (participle) (masculine)
  Past Passive Participle
  From ā-cam (to sip water) + kta suffix
  Prefix: ā
  Root: cam (class 1)

Note: Agrees with tau.

उभौ (ubhau) - both

(pronoun)

Nominative, masculine, dual of ubha

ubha - both

Always used in dual number.

अन्तेन्वासिनौ (antenvāsinau) - resident students, disciples, pupils

(noun)

Nominative, masculine, dual of antenvāsin

antenvāsin - resident pupil, disciple, one who lives in the vicinity (of a teacher's house/village)

From anta (end, vicinity) + nivāsin (resident).

Compound type : tatpurusha (anta+nivāsin)

• anta – end, boundary, vicinity, proximity
  noun (masculine)
• nivāsin – dwelling, residing, an inhabitant, resident
  adjective (noun) (masculine)
  Agent noun from verb nivās (to dwell)
  From ni-vas (to dwell) + ṇini suffix
  Prefix: ni
  Root: vas (class 1)