महाभारतः mahābhārataḥ - book-12, chapter-301, verse-13

बुद्धिरध्यात्ममित्याहुर्यथावेदनिदर्शनम् ।
बोद्धव्यमधिभूतं तु क्षेत्रज्ञोऽत्राधिदैवतम् ॥१३॥

13. buddhiradhyātmamityāhuryathāvedanidarśanam ,
boddhavyamadhibhūtaṁ tu kṣetrajño'trādhidaivatam.

13. buddhiḥ adhyātmam iti āhuḥ yathāvedanidarśanam
boddhavyam adhibhūtam tu kṣetrajñaḥ atra adhidaivatam

13. yathāvedanidarśanam āhuḥ buddhiḥ adhyātmam iti tu
boddhavyam adhibhūtam atra kṣetrajñaḥ adhidaivatam

13. As demonstrated by Vedic examples, they declare the intellect (buddhi) to be the subjective principle (adhyātma). That which is to be understood is the objective principle (adhibhūta), and the knower of the field (kṣetrajña) is the presiding deity (adhidaivatam) in this context.

Words meanings summery:

• बुद्धिः (buddhiḥ) - the faculty of intellect, here as the subjective principle (intellect, understanding, discernment, reason)

• अध्यात्मम् (adhyātmam) - the subjective principle (here referring to the intellect) (relating to the self, spiritual, subjective principle)

• इति (iti) - marks the preceding as a statement or definition (thus, as, so (marks quoted speech or thought))

• आहुः (āhuḥ) - they (the experts) declare (they say, they declare)

• यथावेदनिदर्शनम् (yathāvedanidarśanam) - exemplified or demonstrated by the Vedas (as shown by the Vedas, according to Vedic illustration)

• बोद्धव्यम् (boddhavyam) - that which is the object of the intellect's understanding (to be known, to be understood, object of knowledge)

• अधिभूतम् (adhibhūtam) - the objective principle (here referring to the object of understanding) (relating to material existence, objective principle)

• तु (tu) - introduces a contrasting or additional point (but, indeed, yet, on the other hand)

• क्षेत्रज्ञः (kṣetrajñaḥ) - the knower of the 'field' (body or objective reality), here as the presiding deity of the intellect (knower of the field, the individual soul, consciousness)

• अत्र (atra) - in this context or connection (referring to the intellect) (here, in this place, in this matter)

• अधिदैवतम् (adhidaivatam) - the presiding deity (kṣetrajña) of the intellect (relating to the gods, presiding deity)

Words meanings and morphology

बुद्धिः (buddhiḥ) - the faculty of intellect, here as the subjective principle (intellect, understanding, discernment, reason)

(noun)

Nominative, feminine, singular of buddhi

buddhi - intellect, understanding, discernment, reason, perception, intelligence

From root BUDH (बुध्) 'to know, to awaken'.

Root: budh (class 1)

अध्यात्मम् (adhyātmam) - the subjective principle (here referring to the intellect) (relating to the self, spiritual, subjective principle)

(noun)

Nominative, neuter, singular of adhyātman

adhyātman - the individual soul, the supreme spirit, subjective principle

Compound type : tatpuruṣa (adhi+ātman)

• adhi – over, above, concerning, relating to
  indeclinable
• ātman – self, soul, spirit, essence
  noun (masculine)

इति (iti) - marks the preceding as a statement or definition (thus, as, so (marks quoted speech or thought))

(indeclinable)

आहुः (āhuḥ) - they (the experts) declare (they say, they declare)

(verb)

3rd person , plural, active, present (laṭ) of āh

Present Tense, Active Voice, Third Person Plural

From root AH (अह्) or BRŪ (ब्रू), often used to mean 'they say'.

Root: ah (class 2)

यथावेदनिदर्शनम् (yathāvedanidarśanam) - exemplified or demonstrated by the Vedas (as shown by the Vedas, according to Vedic illustration)

(indeclinable)

Compound type : avyayībhāva / karmadhāraya (yathā+veda+nidarśana)

• yathā – as, according to, in which manner
  indeclinable
• veda – sacred knowledge, Veda, scripture
  noun (masculine)
  From root VID (विद्) 'to know'.
  Root: vid (class 2)
• nidarśana – example, illustration, demonstration, proof
  noun (neuter)
  From prefix NI (नि) + root DṚŚ (दृश्) 'to see'.
  Prefix: ni
  Root: dṛś (class 1)

Note: Functions adverbially here, meaning 'as per Vedic example'.

बोद्धव्यम् (boddhavyam) - that which is the object of the intellect's understanding (to be known, to be understood, object of knowledge)

(noun)

Nominative, neuter, singular of boddhavya

boddhavya - to be known, to be understood, object of knowledge

Gerundive/Future Passive Participle

From root BUDH (बुध्) 'to know, to awaken' + suffix -tavya.

Root: budh (class 1)

Note: Functions as a noun here, 'the object to be known/understood'.

अधिभूतम् (adhibhūtam) - the objective principle (here referring to the object of understanding) (relating to material existence, objective principle)

(noun)

Nominative, neuter, singular of adhibhūta

adhibhūta - the elemental, material or objective principle; pertaining to beings or elements

Compound type : tatpuruṣa (adhi+bhūta)

• adhi – over, above, concerning, relating to
  indeclinable
• bhūta – being, creature, element, past, happened
  noun (neuter)
  Past Passive Participle (when from BHŪ)
  From root BHŪ (भू) 'to be, to become'.
  Root: bhū (class 1)

तु (tu) - introduces a contrasting or additional point (but, indeed, yet, on the other hand)

(indeclinable)

क्षेत्रज्ञः (kṣetrajñaḥ) - the knower of the 'field' (body or objective reality), here as the presiding deity of the intellect (knower of the field, the individual soul, consciousness)

(noun)

Nominative, masculine, singular of kṣetrajña

kṣetrajña - knower of the field, the soul, individual consciousness, spirit

Compound of 'kṣetra' (field, body) and 'jña' (knower, from root JÑĀ (ज्ञा) 'to know').

Compound type : tatpuruṣa (kṣetra+jña)

• kṣetra – field, land, body, sphere, realm
  noun (neuter)
• jña – knower, understanding
  adjective (masculine)
  From root JÑĀ (ज्ञा) 'to know'.
  Root: jñā (class 9)

अत्र (atra) - in this context or connection (referring to the intellect) (here, in this place, in this matter)

(indeclinable)

From pronominal stem 'idam' (इदम्) + suffix -tra.

अधिदैवतम् (adhidaivatam) - the presiding deity (kṣetrajña) of the intellect (relating to the gods, presiding deity)

(noun)

Nominative, neuter, singular of adhidaivata

adhidaivata - the divine principle, presiding deity, relating to the gods

Compound type : tatpuruṣa (adhi+devata)

• adhi – over, above, concerning, relating to
  indeclinable
• devatā – deity, divinity, god
  noun (feminine)