महाभारतः mahābhārataḥ - book-13, chapter-107, verse-42

उभे मूत्रपुरीषे तु दिवा कुर्यादुदङ्मुखः ।
दक्षिणाभिमुखो रात्रौ तथास्यायुर्न रिष्यते ॥४२॥

42. ubhe mūtrapurīṣe tu divā kuryādudaṅmukhaḥ ,
dakṣiṇābhimukho rātrau tathāsyāyurna riṣyate.

42. ubhe mūtrapurīṣe tu divā kuryāt udaṅmukhaḥ
dakṣiṇābhimukhaḥ rātrau tathā asya āyuḥ na riṣyate

42. divā udaṅmukhaḥ rātrau dakṣiṇābhimukhaḥ tu ubhe
mūtrapurīṣe kuryāt tathā asya āyuḥ na riṣyate

42. One should pass both urine and feces facing north during the day, and facing south during the night. In this way, one's lifespan is not diminished.

Words meanings summery:

• उभे (ubhe) - both

• मूत्रपुरीषे (mūtrapurīṣe) - urine and feces

• तु (tu) - but, indeed, however

• दिवा (divā) - by day, during the day

• कुर्यात् (kuryāt) - one should do/make

• उदङ्मुखः (udaṅmukhaḥ) - facing north

• दक्षिणाभिमुखः (dakṣiṇābhimukhaḥ) - facing south

• रात्रौ (rātrau) - at night, by night

• तथा (tathā) - thus, so, in that manner

• अस्य (asya) - his, of him/it

• आयुः (āyuḥ) - life, lifespan, duration of life

• न (na) - not, no

• रिष्यते (riṣyate) - is harmed, is injured, is lost

Words meanings and morphology

उभे (ubhe) - both

(pronoun)

neuter, dual of ubha

ubha - both

मूत्रपुरीषे (mūtrapurīṣe) - urine and feces

(noun)

neuter, dual of mūtrapurīṣa

mūtrapurīṣa - urine and feces

Dvandva compound

Compound type : dvandva (mūtra+purīṣa)

• mūtra – urine
  noun (neuter)
• purīṣa – feces, excrement
  noun (neuter)

तु (tu) - but, indeed, however

(indeclinable)

दिवा (divā) - by day, during the day

(indeclinable)

कुर्यात् (kuryāt) - one should do/make

(verb)

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

Root: kṛ (class 8)

उदङ्मुखः (udaṅmukhaḥ) - facing north

(adjective)

Nominative, masculine, singular of udaṅmukha

udaṅmukha - facing north

Bahuvrīhi compound: udañc (north) + mukha (face)

Compound type : bahuvrīhi (udañc+mukha)

• udañc – north, northern
  adjective
• mukha – face, mouth, front
  noun (neuter)

दक्षिणाभिमुखः (dakṣiṇābhimukhaḥ) - facing south

(adjective)

Nominative, masculine, singular of dakṣiṇābhimukha

dakṣiṇābhimukha - facing south

Bahuvrīhi compound: dakṣiṇa (south) + abhimukha (facing)

Compound type : bahuvrīhi (dakṣiṇa+abhimukha)

• dakṣiṇa – south, southern, right
  adjective
• abhimukha – facing, turned towards
  adjective
  Karmadhāraya compound: abhi (towards) + mukha (face)

रात्रौ (rātrau) - at night, by night

(noun)

Locative, feminine, singular of rātri

rātri - night

तथा (tathā) - thus, so, in that manner

(indeclinable)

अस्य (asya) - his, of him/it

(pronoun)

Genitive, masculine/neuter, singular of idam

idam - this, he, she, it

आयुः (āyuḥ) - life, lifespan, duration of life

(noun)

Nominative, neuter, singular of āyuṣ

āyuṣ - life, lifespan, duration of life

न (na) - not, no

(indeclinable)

रिष्यते (riṣyate) - is harmed, is injured, is lost

(verb)

3rd person , singular, passive, present (laṭ) of riṣ

Root: riṣ (class 4)