महाभारतः mahābhārataḥ - book-6, chapter-30, verse-12

सर्वद्वाराणि संयम्य मनो हृदि निरुध्य च ।
मूर्ध्न्याधायात्मनः प्राणमास्थितो योगधारणाम् ॥१२॥

12. sarvadvārāṇi saṁyamya mano hṛdi nirudhya ca ,
mūrdhnyādhāyātmanaḥ prāṇamāsthito yogadhāraṇām.

12. sarvadvārāṇi saṃyamya manaḥ hṛdi nirudhya ca |
mūrdhni ādhāya ātmanaḥ prāṇam āsthitaḥ yogadhāraṇām

12. sarvadvārāṇi saṃyamya ca manaḥ hṛdi nirudhya
ātmanaḥ prāṇam mūrdhni ādhāya yogadhāraṇām āsthitaḥ

12. Having restrained all the sense-gates, and having confined the mind within the heart, having fixed one's own vital breath (prāṇa) at the crown of the head, and being steadfast in the practice of yoga (yogadhāraṇā)...

Words meanings summery:

• सर्वद्वाराणि (sarvadvārāṇi) - all the sense-gates (of the body) (all gates, all doors, all sense-gates)

• संयम्य (saṁyamya) - having restrained, having controlled

• मनः (manaḥ) - mind

• हृदि (hṛdi) - in the heart

• निरुध्य (nirudhya) - having confined, having restrained

• च (ca) - and

• मूर्ध्नि (mūrdhni) - at the head, on the crown of the head

• आधाय (ādhāya) - having placed, having fixed

• आत्मनः (ātmanaḥ) - of oneself, of the self (ātman) (of oneself, of the self)

• प्राणम् (prāṇam) - vital breath (prāṇa) (vital breath, life-force)

• आस्थितः (āsthitaḥ) - steadfast in (yogadhāraṇā) (situated, steadfast, established)

• योगधारणाम् (yogadhāraṇām) - the practice of yoga (yogadhāraṇā), yoga concentration (the practice of yoga, yoga concentration)

Words meanings and morphology

सर्वद्वाराणि (sarvadvārāṇi) - all the sense-gates (of the body) (all gates, all doors, all sense-gates)

(noun)

Accusative, neuter, plural of sarvadvāra

sarvadvāra - all doors, all gates

Compound type : karmadhāraya (sarva+dvāra)

• sarva – all, every
  adjective (neuter)
• dvāra – door, gate (here sense organ)
  noun (neuter)
  Root: dvā (class 1)

संयम्य (saṁyamya) - having restrained, having controlled

(indeclinable)

Absolutive (gerund)

from sam-yam (to restrain, to control)

Prefix: sam

Root: yam (class 1)

मनः (manaḥ) - mind

(noun)

Accusative, neuter, singular of manas

manas - mind

हृदि (hṛdi) - in the heart

(noun)

Locative, neuter, singular of hṛd

hṛd - heart

निरुध्य (nirudhya) - having confined, having restrained

(indeclinable)

Absolutive (gerund)

from ni-rudh (to obstruct, to confine)

Prefix: ni

Root: rudh (class 7)

च (ca) - and

(indeclinable)

मूर्ध्नि (mūrdhni) - at the head, on the crown of the head

(noun)

Locative, masculine, singular of mūrdhan

mūrdhan - head, crown of the head

आधाय (ādhāya) - having placed, having fixed

(indeclinable)

Absolutive (gerund)

from ā-dhā (to place, to fix)

Prefix: ā

Root: dhā (class 3)

आत्मनः (ātmanaḥ) - of oneself, of the self (ātman) (of oneself, of the self)

(noun)

Genitive, masculine, singular of ātman

ātman - self (ātman), soul, oneself

प्राणम् (prāṇam) - vital breath (prāṇa) (vital breath, life-force)

(noun)

Accusative, masculine, singular of prāṇa

prāṇa - vital breath (prāṇa), life-force

आस्थितः (āsthitaḥ) - steadfast in (yogadhāraṇā) (situated, steadfast, established)

(adjective)

Nominative, masculine, singular of āsthita

āsthita - situated, steadfast, established, resorted to

Past Passive Participle

from ā-sthā (to stand, to be firm)

Prefix: ā

Root: sthā (class 1)

योगधारणाम् (yogadhāraṇām) - the practice of yoga (yogadhāraṇā), yoga concentration (the practice of yoga, yoga concentration)

(noun)

Accusative, feminine, singular of yogadhāraṇā

yogadhāraṇā - practice of yoga (yogadhāraṇā), yoga concentration, meditation

Compound type : tatpurusha (yoga+dhāraṇā)

• yoga – yoga, union, discipline
  noun (masculine)
  Root: yuj (class 7)
• dhāraṇā – concentration, holding, practice
  noun (feminine)
  verbal noun from dhṛ (to hold, support)
  Root: dhṛ (class 1)