योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-122, verse-12

तनुभावितमनस्कस्तेन योगभूमिकां
भावनामधिरूढः ॥ १२ ॥

tanubhāvitamanaskastena
yogabhūmikāṃ bhāvanāmadhirūḍhaḥ 12

12. tanubhāvitamanaskaḥ tena
yogabhūmikām bhāvanām adhirūḍhaḥ

12. saḥ (implied) tanubhāvitamanaskaḥ,
tena yogabhūmikām bhāvanām adhirūḍhaḥ.

12. His mind being subtly imbued (tanubhāvitamanaskaḥ), he has by that means ascended to the stage of yoga (yogabhūmikā), which is (deep) contemplation (bhāvanā).

Words meanings summery:

• तनुभावितमनस्कः (tanubhāvitamanaskaḥ) - one whose mind is subtly imbued, one with a refined mind

• तेन (tena) - by that means, thereby (by that, by him, therefore, by means of that)

• योगभूमिकाम् (yogabhūmikām) - the stage of yoga, the level of yoga

• भावनाम् (bhāvanām) - deep contemplation (contemplation, meditation, notion, feeling, cultivation)

• अधिरूढः (adhirūḍhaḥ) - ascended, mounted, attained, reached

Words meanings and morphology

तनुभावितमनस्कः (tanubhāvitamanaskaḥ) - one whose mind is subtly imbued, one with a refined mind

(adjective)

Nominative, masculine, singular of tanubhāvitamanaska

tanubhāvitamanaska - one whose mind is subtly imbued/cultivated/refined

Compound type : bahuvrihi (tanu+bhāvita+manas)

• tanu – subtle, slender, delicate
  adjective (masculine/feminine/neuter)
• bhāvita – imbued, cultivated, caused to be, purified
  adjective (masculine/feminine/neuter)
  Past Passive Participle
  Causative of root bhū (to be, become), forms past passive participle bhāvita.
  Root: bhū (class 1)
• manas – mind, intellect, thought
  noun (neuter)

तेन (tena) - by that means, thereby (by that, by him, therefore, by means of that)

(pronoun)

Instrumental, masculine/neuter, singular of tad

tad - that, he, she, it

योगभूमिकाम् (yogabhūmikām) - the stage of yoga, the level of yoga

(noun)

Accusative, feminine, singular of yogabhūmikā

yogabhūmikā - stage of yoga, level of yogic practice

Compound type : ṣaṣṭhī-tatpuruṣa (yoga+bhūmikā)

• yoga – yoga, union, discipline, method
  noun (masculine)
  Root: yuj (class 7)
• bhūmikā – stage, ground, role, degree
  noun (feminine)

भावनाम् (bhāvanām) - deep contemplation (contemplation, meditation, notion, feeling, cultivation)

(noun)

Accusative, feminine, singular of bhāvanā

bhāvanā - contemplation, meditation, imagination, production, causing, cultivation, mental discipline

Derived from causative of root bhū

Root: bhū (class 1)

अधिरूढः (adhirūḍhaḥ) - ascended, mounted, attained, reached

(adjective)

Nominative, masculine, singular of adhirūḍha

adhirūḍha - ascended, mounted, attained, reached, gone up to

Past Passive Participle

Root ruh (class 1, rohati) with prefix adhi, forms past passive participle adhirūḍha.

Prefix: adhi

Root: ruh (class 1)