योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-31, verse-55

मनः पुर्यष्टकं विद्धि सर्वकार्यैककारणम् ।
तदैव भेदैः कथितमन्यैः स्वाशयकल्पितैः ॥ ५५ ॥

manaḥ puryaṣṭakaṃ viddhi sarvakāryaikakāraṇam ,
tadaiva bhedaiḥ kathitamanyaiḥ svāśayakalpitaiḥ 55

55. manaḥ puryaṣṭakaṃ viddhi sarvakāryaikakāraṇam |
tadā eva bhedaiḥ kathitam anyaiḥ svāśayakalpitaiḥ

55. manaḥ puryaṣṭakaṃ sarvakāryaikakāraṇam viddhi
tadā eva anyaiḥ svāśayakalpitaiḥ bhedaiḥ kathitam

55. Understand the mind (manas) as the subtle body (puryaṣṭaka), which is the sole cause of all activities. That same [mind] is then described by others through various classifications, which are conceived by their own intentions.

Words meanings summery:

• मनः (manaḥ) - the mind (manas)

• पुर्यष्टकम् (puryaṣṭakam) - the subtle body

• विद्धि (viddhi) - know, understand

• सर्वकार्यैककारणम् (sarvakāryaikakāraṇam) - the sole cause of all actions/effects

• तदा (tadā) - then, at that time

• एव (eva) - indeed, only, very

• भेदैः (bhedaiḥ) - by distinctions, by varieties, by differences

• कथितम् (kathitam) - is said, is told, is called

• अन्यैः (anyaiḥ) - by others, by different ones

• स्वाशयकल्पितैः (svāśayakalpitaiḥ) - by those conceived by one's own intention/ideas, by those imagined by one's own inclinations

Words meanings and morphology

मनः (manaḥ) - the mind (manas)

(noun)

Nominative, neuter, singular of manas

manas - mind, intellect, understanding (manas)

पुर्यष्टकम् (puryaṣṭakam) - the subtle body

(noun)

Accusative, neuter, singular of puryaṣṭaka

puryaṣṭaka - the subtle body (consisting of eight elements: manas, buddhi, ahaṅkāra, five tanmātras), 'city of eight'

Compound type : dvigu (pur+aṣṭaka)

• pur – city, body
  noun (feminine)
• aṣṭaka – group of eight
  noun (neuter)

विद्धि (viddhi) - know, understand

(verb)

2nd person , singular, active, imperative (loṭ) of vid

Root: vid (class 2)

सर्वकार्यैककारणम् (sarvakāryaikakāraṇam) - the sole cause of all actions/effects

(noun)

Accusative, neuter, singular of sarvakāryaikakāraṇa

sarvakāryaikakāraṇa - the sole cause of all effects/activities

Compound type : tatpuruṣa (sarvakārya+eka+kāraṇa)

• sarvakārya – all actions/effects
  noun (neuter)
• eka – one, sole, unique
  adjective
• kāraṇa – cause, reason, instrument
  noun (neuter)

तदा (tadā) - then, at that time

(indeclinable)

एव (eva) - indeed, only, very

(indeclinable)

भेदैः (bhedaiḥ) - by distinctions, by varieties, by differences

(noun)

Instrumental, masculine, plural of bheda

bheda - distinction, difference, variety, division

कथितम् (kathitam) - is said, is told, is called

(adjective)

Nominative, neuter, singular of kathita

kathita - said, spoken, told, called

Past Passive Participle

Derived from root kath (to speak, to tell).

Root: kath (class 10)

अन्यैः (anyaiḥ) - by others, by different ones

(pronoun)

Instrumental, masculine, plural of anya

anya - other, different

स्वाशयकल्पितैः (svāśayakalpitaiḥ) - by those conceived by one's own intention/ideas, by those imagined by one's own inclinations

(adjective)

Instrumental, masculine, plural of svāśayakalpita

svāśayakalpita - imagined by one's own intention/inclination

Compound type : tatpuruṣa (sva+āśaya+kalpita)

• sva – one's own
  pronoun
• āśaya – intention, inclination, meaning, abode
  noun (masculine)
• kalpita – imagined, fashioned, produced
  adjective
  Past Passive Participle
  Derived from root kḷp (to arrange, to imagine).
  Root: kḷp (class 10)