महाभारतः mahābhārataḥ - book-3, chapter-83, verse-71

गङ्गायमुनयोर्मध्यं पृथिव्या जघनं स्मृतम् ।
प्रयागं जघनस्यान्तमुपस्थमृषयो विदुः ॥७१॥

71. gaṅgāyamunayormadhyaṁ pṛthivyā jaghanaṁ smṛtam ,
prayāgaṁ jaghanasyāntamupasthamṛṣayo viduḥ.

71. gaṅgāyamunayoḥ madhyam pṛthivyāḥ jaghanam smṛtam
prayāgam jaghanasya antam upastham ṛṣayaḥ viduḥ

71. The region between the Gaṅgā and Yamunā is remembered as the loins of the earth. The sages know Prayāga as the innermost part of those loins, the lap.

Words meanings summery:

• गङ्गायमुनयोः (gaṅgāyamunayoḥ) - of the Gaṅgā and Yamunā

• मध्यम् (madhyam) - middle, center, space

• पृथिव्याः (pṛthivyāḥ) - of the earth

• जघनम् (jaghanam) - hip, loins, buttocks, hindquarters

• स्मृतम् (smṛtam) - remembered, considered, known

• प्रयागम् (prayāgam) - The holy city of Prayāga (modern Prayagraj). (Prayāga)

• जघनस्य (jaghanasya) - of the loins

• अन्तम् (antam) - end, interior, innermost part

• उपस्थम् (upastham) - lap, genitals, private part

• ऋषयः (ṛṣayaḥ) - sages

• विदुः (viduḥ) - they know, understand

Words meanings and morphology

गङ्गायमुनयोः (gaṅgāyamunayoḥ) - of the Gaṅgā and Yamunā

(proper noun)

Genitive, feminine, dual of gaṅgāyamunā

gaṅgāyamunā - Gaṅgā and Yamunā rivers

Compound type : dvandva (gaṅgā+yamunā)

• gaṅgā – Gaṅgā river
  proper noun (feminine)
• yamunā – Yamunā river
  proper noun (feminine)

मध्यम् (madhyam) - middle, center, space

(noun)

neuter, singular of madhya

madhya - middle, center, interval, mid-point

पृथिव्याः (pṛthivyāḥ) - of the earth

(noun)

Genitive, feminine, singular of pṛthivī

pṛthivī - earth, world, ground

जघनम् (jaghanam) - hip, loins, buttocks, hindquarters

(noun)

neuter, singular of jaghana

jaghana - hip, loins, buttocks, hindquarters

स्मृतम् (smṛtam) - remembered, considered, known

(adjective)

neuter, singular of smṛta

smṛta - remembered, known, taught (as per tradition), recorded

Past Passive Participle

Derived from root smṛ (to remember).

Root: smṛ (class 1)

प्रयागम् (prayāgam) - The holy city of Prayāga (modern Prayagraj). (Prayāga)

(proper noun)

Accusative, masculine, singular of prayāga

prayāga - Prayāga (a sacred confluence of rivers, modern Allahabad/Prayagraj)

जघनस्य (jaghanasya) - of the loins

(noun)

Genitive, neuter, singular of jaghana

jaghana - hip, loins, buttocks, hindquarters

अन्तम् (antam) - end, interior, innermost part

(noun)

Accusative, masculine, singular of anta

anta - end, boundary, limit, interior, proximity

उपस्थम् (upastham) - lap, genitals, private part

(noun)

Accusative, masculine/neuter, singular of upastha

upastha - lap, private parts, generative organs, proximity

ऋषयः (ṛṣayaḥ) - sages

(noun)

Nominative, masculine, plural of ṛṣi

ṛṣi - sage, seer, inspired poet, Vedic prophet

विदुः (viduḥ) - they know, understand

(verb)

3rd person , plural, active, present indicative (laṭ) of vid

3rd person plural present active indicative of root vid.

Root: vid (class 2)