महाभारतः mahābhārataḥ - book-3, chapter-61, verse-42

राजसूयाश्वमेधानां क्रतूनां दक्षिणावताम् ।
आहर्ता पार्थिवश्रेष्ठः पृथुचार्वञ्चितेक्षणः ॥४२॥

42. rājasūyāśvamedhānāṁ kratūnāṁ dakṣiṇāvatām ,
āhartā pārthivaśreṣṭhaḥ pṛthucārvañcitekṣaṇaḥ.

42. rājasūyāśvamedhānām kratūnām dakṣiṇāvatām
āhartā pārthivaśreṣṭhaḥ pṛthucārvancitekṣaṇaḥ

42. āhartā pārthivaśreṣṭhaḥ pṛthucārvancitekṣaṇaḥ
rājasūyāśvamedhānām dakṣiṇāvatām kratūnām

42. He is the performer of the Rājasūya and Aśvamedha (Vedic rituals), which are accompanied by generous offerings. He is the foremost among kings, whose wide eyes are beautifully expansive.

Words meanings summery:

• राजसूयाश्वमेधानाम् (rājasūyāśvamedhānām) - of the grand Rājasūya and Aśvamedha Vedic rituals (of the Rājasūya and Aśvamedha rituals)

• क्रतूनाम् (kratūnām) - of the Vedic rituals (of the rituals, of the sacrifices)

• दक्षिणावताम् (dakṣiṇāvatām) - of those (rituals) accompanied by generous fees (of those possessing gifts/fees, of those accompanied by gifts)

• आहर्ता (āhartā) - the performer (of these rituals) (the performer, the one who brings, the one who gathers)

• पार्थिवश्रेष्ठः (pārthivaśreṣṭhaḥ) - the foremost among kings (the best among kings, the foremost ruler)

• पृथुचार्वन्चितेक्षणः (pṛthucārvancitekṣaṇaḥ) - whose wide eyes are beautifully expansive (whose eyes are wide, beautiful and extended)

Words meanings and morphology

राजसूयाश्वमेधानाम् (rājasūyāśvamedhānām) - of the grand Rājasūya and Aśvamedha Vedic rituals (of the Rājasūya and Aśvamedha rituals)

(noun)

Genitive, masculine, plural of rājasūyāśvamedha

rājasūyāśvamedha - The Rājasūya and Aśvamedha sacrifices/rituals

Compound type : dvandva (rājasūya+aśvamedha)

• rājasūya – royal consecration ritual, Rājasūya (Vedic ritual)
  noun (masculine)
• aśvamedha – horse sacrifice ritual, Aśvamedha (Vedic ritual)
  noun (masculine)

क्रतूनाम् (kratūnām) - of the Vedic rituals (of the rituals, of the sacrifices)

(noun)

Genitive, masculine, plural of kratu

kratu - ritual, sacrifice, ceremony, rite

दक्षिणावताम् (dakṣiṇāvatām) - of those (rituals) accompanied by generous fees (of those possessing gifts/fees, of those accompanied by gifts)

(adjective)

Genitive, masculine, plural of dakṣiṇāvat

dakṣiṇāvat - possessing gifts/fees, endowed with offerings

Derived from `dakṣiṇā` (fee, gift) + suffix `vat` (possessing).

Note: Matches gender, number, and case of `kratūnām`.

आहर्ता (āhartā) - the performer (of these rituals) (the performer, the one who brings, the one who gathers)

(noun)

Nominative, masculine, singular of āhartṛ

āhartṛ - performer, sacrificer, one who fetches/brings

agent noun from √hṛ with ā

Derived from root `hṛ` (to carry, bring) with prefix `ā-` (towards, near).

Prefix: ā

Root: hṛ (class 1)

पार्थिवश्रेष्ठः (pārthivaśreṣṭhaḥ) - the foremost among kings (the best among kings, the foremost ruler)

(noun)

Nominative, masculine, singular of pārthivaśreṣṭha

pārthivaśreṣṭha - best of kings

Compound type : tatpuruṣa (pārthiva+śreṣṭha)

• pārthiva – king, ruler, earthly
  noun (masculine)
  Derived from `pṛthivī` (earth).
• śreṣṭha – best, excellent, chief, principal
  adjective (masculine)
  superlative of praśasya (good)
  Superlative degree adjective.

Note: Used as an epithet for the king.

पृथुचार्वन्चितेक्षणः (pṛthucārvancitekṣaṇaḥ) - whose wide eyes are beautifully expansive (whose eyes are wide, beautiful and extended)

(adjective)

Nominative, masculine, singular of pṛthucārvancitekṣaṇa

pṛthucārvancitekṣaṇa - having broad, charming, and elongated eyes

Compound type : bahuvrīhi (pṛthu+cāru+añcita+īkṣaṇa)

• pṛthu – broad, wide, large
  adjective (masculine)
• cāru – charming, beautiful, pleasing
  adjective (masculine)
• añcita – bent, curved, beautiful, extended (in context of eyes)
  adjective (masculine)
  Past Passive Participle
  From root `añc` (to bend, curve, honor). Here, referring to the elongation/beauty of eyes.
  Root: añc (class 1)
• īkṣaṇa – eye, seeing, looking
  noun (neuter)
  From root `īkṣ` (to see).
  Root: īkṣ (class 1)

Note: Qualifies the subject `āhartā pārthivaśreṣṭhaḥ`.