महाभारतः mahābhārataḥ - book-12, chapter-232, verse-25

येनोपायेन शक्येत संनियन्तुं चलं मनः ।
तं तं युक्तो निषेवेत न चैव विचलेत्ततः ॥२५॥

25. yenopāyena śakyeta saṁniyantuṁ calaṁ manaḥ ,
taṁ taṁ yukto niṣeveta na caiva vicalettataḥ.

25. yena upāyena śakyeta saṃniyantum calam manaḥ
tam tam yuktaḥ niṣeveta na ca eva vicalet tataḥ

25. yena upāyena calam manaḥ saṃniyantum śakyeta
tam tam yuktaḥ niṣeveta ca eva tataḥ na vicalet

25. By whatever means the restless mind (manas) can be restrained, one, being disciplined in yoga (yoga), should diligently resort to that very method and should indeed not deviate from it.

Words meanings summery:

• येन (yena) - by which, by whom

• उपायेन (upāyena) - by means, by method, by device

• शक्येत (śakyeta) - one may be able, it may be possible

• संनियन्तुम् (saṁniyantum) - to restrain, to control fully

• चलम् (calam) - restless, wavering, moving

• मनः (manaḥ) - mind, intellect

• तम् (tam) - that (masculine accusative singular)

• तम् (tam) - that (masculine accusative singular)

• युक्तः (yuktaḥ) - one who is engaged in the practice of yoga (yoga) (disciplined, engaged, connected, united, appropriate)

• निषेवेत (niṣeveta) - one should diligently practice (one should resort to, one should practice, one should serve)

• न (na) - not, no

• च (ca) - and, also

• एव (eva) - indeed, certainly, only

• विचलेत् (vicalet) - one should deviate, one should swerve, one should wander

• ततः (tataḥ) - from that (method/means) (from that, thence, from it)

Words meanings and morphology

येन (yena) - by which, by whom

(pronoun)

Instrumental, masculine, singular of yad

yad - which, what, who

Pronominal stem.

Note: Refers to upāyena.

उपायेन (upāyena) - by means, by method, by device

(noun)

Instrumental, masculine, singular of upāya

upāya - means, method, expedient, approach

From upa-i + ghañ.

Prefix: upa

Root: i (class 2)

शक्येत (śakyeta) - one may be able, it may be possible

(verb)

3rd person , singular, passive, optative (liṅ) of śak

Optative Mood, Ātmanepada, 3rd Person Singular

Potential passive voice form from root śak (5th class).

Root: śak (class 5)

संनियन्तुम् (saṁniyantum) - to restrain, to control fully

(indeclinable)

Infinitive

Formed from sam-ni-yam + tumun suffix.

Prefixes: sam+ni

Root: yam (class 1)

Note: Acts as a dative equivalent, indicating purpose.

चलम् (calam) - restless, wavering, moving

(adjective)

Accusative, neuter, singular of cala

cala - moving, trembling, fickle, unsteady, restless

From root cal (1st class) + a suffix.

Root: cal (class 1)

मनः (manaḥ) - mind, intellect

(noun)

Accusative, neuter, singular of manas

manas - mind, intellect, heart, thought (manas)

Root: man (class 4)

तम् (tam) - that (masculine accusative singular)

(pronoun)

Accusative, masculine, singular of tad

tad - that, this, he, she, it

Pronominal stem.

Note: Refers to upāya.

तम् (tam) - that (masculine accusative singular)

(pronoun)

Accusative, masculine, singular of tad

tad - that, this, he, she, it

Pronominal stem.

Note: Refers to upāya.

युक्तः (yuktaḥ) - one who is engaged in the practice of yoga (yoga) (disciplined, engaged, connected, united, appropriate)

(adjective)

Nominative, masculine, singular of yukta

yukta - joined, united, fit, proper, attentive, absorbed, engaged in yoga

Past Passive Participle

From root yuj + kta suffix.

Root: yuj (class 7)

Note: Adverbial usage to describe the agent.

निषेवेत (niṣeveta) - one should diligently practice (one should resort to, one should practice, one should serve)

(verb)

3rd person , singular, middle, optative (liṅ) of niṣev

Optative Mood, Ātmanepada, 3rd Person Singular

From root sev (1st class) with prefix ni.

Prefix: ni

Root: sev (class 1)

न (na) - not, no

(indeclinable)

Negative particle.

च (ca) - and, also

(indeclinable)

Conjunction.

एव (eva) - indeed, certainly, only

(indeclinable)

Emphatic particle.

विचलेत् (vicalet) - one should deviate, one should swerve, one should wander

(verb)

3rd person , singular, active, optative (vidhiliṅ) of vical

Optative Mood, Parasmaipada, 3rd Person Singular

From root cal (1st class) with prefix vi.

Prefix: vi

Root: cal (class 1)

ततः (tataḥ) - from that (method/means) (from that, thence, from it)

(indeclinable)

From pronominal stem tad + tas suffix.