योगवासिष्ठः yogavāsiṣṭhaḥ - book-7, chapter-43, verse-42

एकत्वादर्थमनसी सममेवाशु शाम्यतः ।
अर्थः संकल्परूपात्मा नेहितव्यो विजानतो ॥ ४२ ॥

ekatvādarthamanasī samamevāśu śāmyataḥ ,
arthaḥ saṃkalparūpātmā nehitavyo vijānato 42

42. ekatvāt artha-manasī samam eva āśu śāmyataḥ |
arthaḥ saṃkalpa-rūpa-ātmā na īhitavyaḥ vijānataḥ ||

42. ekatvāt artha-manasī samam eva āśu śāmyataḥ arthaḥ saṃkalpa-rūpa-ātmā (asti),
vijānataḥ na īhitavyaḥ

42. Due to their oneness, the object and the mind (manas) both quickly subside simultaneously. The object, whose intrinsic nature (ātman) is imagination (saṃkalpa), should not be desired by one who knows.

Words meanings summery:

• एकत्वात् (ekatvāt) - due to oneness, from oneness

• अर्थ-मनसी (artha-manasī) - object and mind

• समम् (samam) - equally, simultaneously

• एव (eva) - alone, only, indeed

• आशु (āśu) - quickly, swiftly

• शाम्यतः (śāmyataḥ) - subside, become peaceful (dual)

• अर्थः (arthaḥ) - object, meaning, purpose

• संकल्प-रूप-आत्मा (saṁkalpa-rūpa-ātmā) - whose intrinsic nature (ātman) is the form (rūpa) of imagination (saṃkalpa)

• न (na) - not

• ईहितव्यः (īhitavyaḥ) - to be desired, to be sought

• विजानतः (vijānataḥ) - by one who knows, of one who knows

Words meanings and morphology

एकत्वात् (ekatvāt) - due to oneness, from oneness

(noun)

Ablative, neuter, singular of ekatva

ekatva - oneness, unity

अर्थ-मनसी (artha-manasī) - object and mind

(noun)

Nominative, neuter, dual of artha-manas

artha-manas - object and mind

Compound type : dvandva (artha+manas)

• artha – object, purpose, meaning, wealth
  noun (masculine)
• manas – mind, intellect, heart, thought
  noun (neuter)

समम् (samam) - equally, simultaneously

(indeclinable)

Note: Used adverbially (neuter accusative singular).

एव (eva) - alone, only, indeed

(indeclinable)

आशु (āśu) - quickly, swiftly

(indeclinable)

Note: Used adverbially.

शाम्यतः (śāmyataḥ) - subside, become peaceful (dual)

(verb)

3rd person , dual, active, present (laṭ) of śam

Root: śam (class 4)

अर्थः (arthaḥ) - object, meaning, purpose

(noun)

Nominative, masculine, singular of artha

artha - object, meaning, purpose, wealth

संकल्प-रूप-आत्मा (saṁkalpa-rūpa-ātmā) - whose intrinsic nature (ātman) is the form (rūpa) of imagination (saṃkalpa)

(noun)

Nominative, masculine, singular of saṃkalparūpātman

saṁkalparūpātman - whose nature is the form of imagination/resolve

Compound type : bahuvrīhi (saṃkalpa+rūpa+ātman)

• saṃkalpa – imagination, resolve, intention, mental formation
  noun (masculine)
• rūpa – form, shape, nature, appearance
  noun (neuter)
• ātman – self, soul, essence, individual soul (ātman)
  noun (masculine)

न (na) - not

(indeclinable)

ईहितव्यः (īhitavyaḥ) - to be desired, to be sought

(adjective)

Nominative, masculine, singular of īhitavya

īhitavya - to be desired, to be sought, desirable

Gerundive

Potential Passive Participle (krtya) from root 'īh'.

Root: īh (class 1)

विजानतः (vijānataḥ) - by one who knows, of one who knows

(adjective)

Genitive, masculine, singular of vijānat

vijānat - knowing, discerning, wise

Present Active Participle

Present active participle from root 'jñā' with prefix 'vi'.

Prefix: vi

Root: jñā (class 9)

Note: Here, it functions as the agent of the gerundive 'īhitavyaḥ', often expressed in the genitive or instrumental.