योगवासिष्ठः yogavāsiṣṭhaḥ - book-6, chapter-24, verse-8

आत्मचिन्तावयस्यानां मध्यादेकतमा मया ।
सर्वदुःखक्षयकरी सर्वसौभाग्यवर्धिनी ॥ ८ ॥

ātmacintāvayasyānāṃ madhyādekatamā mayā ,
sarvaduḥkhakṣayakarī sarvasaubhāgyavardhinī 8

8. ātmacintāvayasyānām madhyāt ekatamā mayā
sarvaduḥkhakṣayakarī sarvasaubhāgyavardhinī

8. mayā ātmacintāvayasyānām madhyāt sarvaduḥkhakṣayakarī
sarvasaubhāgyavardhinī ekatamā (cintā) (samāśritā)

8. From among these companions in contemplation of the self (ātman), one (particular contemplation) was chosen by me, which brings about the destruction of all suffering and the increase of all good fortune.

Words meanings summery:

• आत्मचिन्तावयस्यानाम् (ātmacintāvayasyānām) - of those various contemplations that are companions to self-contemplation (ātman) (of the companions in self-contemplation)

• मध्यात् (madhyāt) - from among (these companions) (from the middle, from among, in the midst of)

• एकतमा (ekatamā) - one particular contemplation (referring to prāṇacintā from next verse) (one of them, one particular (feminine))

• मया (mayā) - by me

• सर्वदुःखक्षयकरी (sarvaduḥkhakṣayakarī) - causing the destruction of all suffering

• सर्वसौभाग्यवर्धिनी (sarvasaubhāgyavardhinī) - increasing all good fortune, enhancing all prosperity

Words meanings and morphology

आत्मचिन्तावयस्यानाम् (ātmacintāvayasyānām) - of those various contemplations that are companions to self-contemplation (ātman) (of the companions in self-contemplation)

(noun)

Genitive, masculine, plural of ātmacintāvayasya

ātmacintāvayasya - companion in self-contemplation

Compound type : tatpuruṣa (ātman+cintā+vayasya)

• ātman – self, soul, supreme spirit, essence
  noun (masculine)
• cintā – thought, concern, contemplation, reflection
  noun (feminine)
  From root cit (to perceive, think)
  Root: cit (class 1)
• vayasya – companion, friend, contemporary
  noun (masculine)

मध्यात् (madhyāt) - from among (these companions) (from the middle, from among, in the midst of)

(indeclinable)

एकतमा (ekatamā) - one particular contemplation (referring to prāṇacintā from next verse) (one of them, one particular (feminine))

(adjective)

Nominative, feminine, singular of ekatama

ekatama - one of them, principal, chief

Superlative suffix 'tama' added to 'eka'

मया (mayā) - by me

(pronoun)

Instrumental, singular of asmad

asmad - I, me

सर्वदुःखक्षयकरी (sarvaduḥkhakṣayakarī) - causing the destruction of all suffering

(adjective)

Nominative, feminine, singular of sarvaduḥkhakṣayakarī

sarvaduḥkhakṣayakarī - causing the destruction of all suffering

Compound type : tatpuruṣa (sarva+duḥkha+kṣaya+karī)

• sarva – all, every, whole
  adjective (masculine)
• duḥkha – suffering, pain, misery, sorrow
  noun (neuter)
• kṣaya – destruction, decay, diminution, loss
  noun (masculine)
  From root kṣi (to destroy, waste)
  Root: kṣi (class 1)
• karī – maker, doer, causing (feminine)
  adjective (feminine)
  Agent noun
  From root kṛ (to do, make), feminine form
  Root: kṛ (class 8)

सर्वसौभाग्यवर्धिनी (sarvasaubhāgyavardhinī) - increasing all good fortune, enhancing all prosperity

(adjective)

Nominative, feminine, singular of sarvasaubhāgyavardhinī

sarvasaubhāgyavardhinī - increasing all good fortune/prosperity

Compound type : tatpuruṣa (sarva+saubhāgya+vardhinī)

• sarva – all, every, whole
  adjective (masculine)
• saubhāgya – good fortune, prosperity, auspiciousness, happiness
  noun (neuter)
  From subhaga (fortunate, auspicious)
• vardhinī – increaser, causing increase, promoting (feminine)
  adjective (feminine)
  Agent noun
  From root vṛdh (to grow, increase), feminine form
  Root: vṛdh (class 1)