योगवासिष्ठः yogavāsiṣṭhaḥ - book-3, chapter-111, verse-5

शास्रसत्सङ्गधीरेण चिन्तातप्तमतापिना ।
छिन्धि त्वमायसेनायो मनसैव मनो मुने ॥ ५ ॥

śāsrasatsaṅgadhīreṇa cintātaptamatāpinā ,
chindhi tvamāyasenāyo manasaiva mano mune 5

5. śāstrasatsaṅgadhīreṇa cintātaptamātāpinā
chindhi tvam āyasena ayaḥ manasā eva manaḥ mune

5. mune,
tvam śāstrasatsaṅgadhīreṇa cintātaptamātāpinā (bhūtvā),
manasā eva manaḥ chindhi,
(yathā) āyasena ayaḥ.

5. O sage (mune)! You, who are made firm by scriptures and the company of the wise (satsaṅga), and who are scorched by the heat of anxiety, cut the mind (manaḥ) with the mind itself (manasaiva), just as you would cut iron with iron.

Words meanings summery:

• शास्त्रसत्सङ्गधीरेण (śāstrasatsaṅgadhīreṇa) - by one made firm by scriptures and good company

• चिन्तातप्तमातापिना (cintātaptamātāpinā) - by one scorched by the heat of anxiety and suffering, by one distressed by anxious thoughts

• छिन्धि (chindhi) - cut, sever, break

• त्वम् (tvam) - you

• आयसेन (āyasena) - by iron, by an iron (object)

• अयः (ayaḥ) - iron, metal

• मनसा (manasā) - by the mind, with the mind

• एव (eva) - itself, only, indeed

• मनः (manaḥ) - mind, intellect, heart

• मुने (mune) - O sage!

Words meanings and morphology

शास्त्रसत्सङ्गधीरेण (śāstrasatsaṅgadhīreṇa) - by one made firm by scriptures and good company

(adjective)

Instrumental, masculine, singular of śāstrasatsaṅgadhīra

śāstrasatsaṅgadhīra - firm, steady, or wise through scriptures and good company

Bahuvrīhi compound: one whose firmness/wisdom is due to 'śāstrasatsaṅga'.

Compound type : bahuvrīhi (śāstra+satsaṅga+dhīra)

• śāstra – scripture, treatise, rule
  noun (neuter)
  From root 'śās' (to teach).
  Root: śās (class 2)
• satsaṅga – good company, association with the wise
  noun (masculine)
  Tatpuruṣa compound: 'sat' (good/real) + 'saṅga' (company).
• dhīra – firm, steady, courageous, wise, intelligent
  adjective (masculine)

Note: Qualifies 'tvam' (you).

चिन्तातप्तमातापिना (cintātaptamātāpinā) - by one scorched by the heat of anxiety and suffering, by one distressed by anxious thoughts

(adjective)

Instrumental, masculine, singular of cintātaptamātāpin

cintātaptamātāpin - one who is tormented or suffering from the heat of anxiety

Bahuvrīhi compound: one who has the tormenting quality or suffering from anxiety-induced heat.

Compound type : bahuvrīhi (cintā+tapta+mātāpin)

• cintā – thought, anxiety, worry
  noun (feminine)
  From root 'cit' (to perceive, think).
  Root: cit (class 1)
• tapta – scorched, heated, distressed, tormented
  adjective (masculine)
  Past Passive Participle
  From root 'tap' (to heat, suffer).
  Root: tap (class 1)
• mātāpin – one who suffers, one who is tormented, causing pain/heat
  adjective (masculine)
  From root 'tap' (to heat, torment) with a prefix or intensification (mā-).
  Root: tap (class 1)

Note: Qualifies 'tvam' (you).

छिन्धि (chindhi) - cut, sever, break

(verb)

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

Imperative active

Root 'chid' (class 7). Second person singular imperative.

Root: chid (class 7)

त्वम् (tvam) - you

(pronoun)

Nominative, singular of yuṣmad

yuṣmad - you (2nd person pronoun)

Note: Subject of the imperative.

आयसेन (āyasena) - by iron, by an iron (object)

(adjective)

Instrumental, neuter, singular of āyasa

āyasa - made of iron, iron (adj. or noun)

Derived from 'ayas' (iron) with 'aṇ' suffix.

Note: Instrumental for the simile: 'by an iron (implement)'.

अयः (ayaḥ) - iron, metal

(noun)

Nominative, neuter, singular of ayas

ayas - iron, metal, ore

Note: Object of implicit 'cut' in the simile: 'iron (itself)'.

मनसा (manasā) - by the mind, with the mind

(noun)

Instrumental, neuter, singular of manas

manas - mind, intellect, heart, thought, inner sense

Root: man (class 4)

Note: Agent/instrument of 'chindhi'.

एव (eva) - itself, only, indeed

(indeclinable)

Particle.

मनः (manaḥ) - mind, intellect, heart

(noun)

Accusative, neuter, singular of manas

manas - mind, intellect, heart, thought, inner sense

Root: man (class 4)

Note: Object of 'chindhi'.

मुने (mune) - O sage!

(noun)

Vocative, masculine, singular of muni

muni - sage, ascetic, silent one, seer

Note: Addressed to a sage.