महाभारतः mahābhārataḥ - book-12, chapter-198, verse-7

यथा महान्ति भूतानि निवर्तन्ते गुणक्षये ।
तथेन्द्रियाण्युपादाय बुद्धिर्मनसि वर्तते ॥७॥

7. yathā mahānti bhūtāni nivartante guṇakṣaye ,
tathendriyāṇyupādāya buddhirmanasi vartate.

7. yathā mahānti bhūtāni nivartante guṇakṣaye
tathā indriyāṇi upādāya buddhiḥ manasi vartate

7. yathā guṇakṣaye mahānti bhūtāni nivartante
tathā buddhiḥ indriyāṇi upādāya manasi vartate

7. Just as the great elements (bhūtāni) dissolve at the waning of the qualities (guṇa), so also the intellect, having withdrawn the senses, operates within the mind.

Words meanings summery:

• यथा (yathā) - Introduces a comparison. (just as, as, in the manner that)

• महान्ति (mahānti) - Describing the fundamental elements. (great, mighty, large)

• भूतानि (bhūtāni) - The five great elements (earth, water, fire, air, ether). (elements, beings, creatures, what has been)

• निवर्तन्ते (nivartante) - The elements dissolve or withdraw into their source. (return, cease, are dissolved, desist)

• गुणक्षये (guṇakṣaye) - Refers to the end of the influence or manifestation of the three guṇas. (at the waning/destruction/dissolution of qualities)

• तथा (tathā) - Correlates with 'yathā', introducing the second part of the comparison. (so, thus, in that manner)

• इन्द्रियाणि (indriyāṇi) - The five cognitive and five conative senses. (senses, sense organs)

• उपादाय (upādāya) - Having withdrawn or collected the senses. (having taken, having grasped, having adopted, having withdrawn)

• बुद्धिः (buddhiḥ) - The faculty of intellect, which then focuses internally. (intellect, understanding, discernment)

• मनसि (manasi) - The sphere of operation for the withdrawn intellect. (in the mind)

• वर्तते (vartate) - The intellect functions or turns inward within the mind. (operates, resides, turns, exists)

Words meanings and morphology

यथा (yathā) - Introduces a comparison. (just as, as, in the manner that)

(indeclinable)

महान्ति (mahānti) - Describing the fundamental elements. (great, mighty, large)

(adjective)

Nominative, neuter, plural of mahat

mahat - great, large, mighty, important

Note: Qualifies 'bhūtāni'.

भूतानि (bhūtāni) - The five great elements (earth, water, fire, air, ether). (elements, beings, creatures, what has been)

(noun)

Nominative, neuter, plural of bhūta

bhūta - element, being, creature, past

Past Passive Participle (derived from √bhū)

Root: bhū (class 1)

Note: Subject of 'nivartante'.

निवर्तन्ते (nivartante) - The elements dissolve or withdraw into their source. (return, cease, are dissolved, desist)

(verb)

3rd person , plural, middle, present indicative (laṭ) of vṛt

Middle voice form of ni-vṛt

Prefix: ni

Root: vṛt (class 1)

गुणक्षये (guṇakṣaye) - Refers to the end of the influence or manifestation of the three guṇas. (at the waning/destruction/dissolution of qualities)

(noun)

Locative, masculine, singular of guṇakṣaya

guṇakṣaya - dissolution of qualities, waning of attributes

Compound of guṇa (quality) and kṣaya (destruction)

Compound type : tatpuruṣa (guṇa+kṣaya)

• guṇa – quality, attribute, constituent of nature
  noun (masculine)
• kṣaya – destruction, decrease, loss, waning, end
  noun (masculine)
  Derived from root √kṣi (to destroy, diminish)
  Root: kṣi (class 1)

Note: Indicates the time or condition for the elements' dissolution.

तथा (tathā) - Correlates with 'yathā', introducing the second part of the comparison. (so, thus, in that manner)

(indeclinable)

इन्द्रियाणि (indriyāṇi) - The five cognitive and five conative senses. (senses, sense organs)

(noun)

Accusative, neuter, plural of indriya

indriya - sense, sense organ, faculty

Note: Object of 'upādāya'.

उपादाय (upādāya) - Having withdrawn or collected the senses. (having taken, having grasped, having adopted, having withdrawn)

(indeclinable)

Absolutive/Gerund

Derived from root √dā (to give, take) with prefixes upa and ā

Prefixes: upa+ā

Root: dā (class 3)

Note: Expresses a prior action by the intellect.

बुद्धिः (buddhiḥ) - The faculty of intellect, which then focuses internally. (intellect, understanding, discernment)

(noun)

Nominative, feminine, singular of buddhi

buddhi - intellect, reason, understanding, discernment

Derived from root √budh (to know, understand)

Root: budh (class 1)

Note: Subject of 'vartate'.

मनसि (manasi) - The sphere of operation for the withdrawn intellect. (in the mind)

(noun)

Locative, neuter, singular of manas

manas - mind, intellect, thought

Note: Indicates location.

वर्तते (vartate) - The intellect functions or turns inward within the mind. (operates, resides, turns, exists)

(verb)

3rd person , singular, middle, present indicative (laṭ) of vṛt

Middle voice form of √vṛt

Root: vṛt (class 1)

Note: Subject is 'buddhiḥ'.