महाभारतः mahābhārataḥ - book-13, chapter-92, verse-16

जलं प्रतरमाणश्च कीर्तयेत पितामहान् ।
नदीमासाद्य कुर्वीत पितॄणां पिण्डतर्पणम् ॥१६॥

16. jalaṁ prataramāṇaśca kīrtayeta pitāmahān ,
nadīmāsādya kurvīta pitṝṇāṁ piṇḍatarpaṇam.

16. jalam prataramāṇaḥ ca kīrtayeta pitāmahān
nadīm āsādya kurvīta pitṝṇām piṇḍatarpaṇam

16. One who is crossing water should remember his paternal ancestors. Having reached a river, one should perform the ritual of offering rice balls and water libations for the ancestors (pitṛ).

Words meanings summery:

• जलम् (jalam) - water

• प्रतरमाणः (prataramāṇaḥ) - crossing over, swimming across

• च (ca) - and

• कीर्तयेत (kīrtayeta) - should praise, should mention, should remember

• पितामहान् (pitāmahān) - paternal grandfathers, ancestors

• नदीम् (nadīm) - river

• आसाद्य (āsādya) - having reached, having obtained

• कुर्वीत (kurvīta) - should do, should perform

• पितॄणाम् (pitṝṇām) - of the ancestors, of the fathers

• पिण्डतर्पणम् (piṇḍatarpaṇam) - offering of rice balls and water libation

Words meanings and morphology

जलम् (jalam) - water

(noun)

Accusative, neuter, singular of jala

jala - water

प्रतरमाणः (prataramāṇaḥ) - crossing over, swimming across

(adjective)

Nominative, masculine, singular of prataramāṇa

prataramāṇa - crossing over, swimming across

Present Active Participle (Ātmanepada)

Derived from pra- + √tṛ (to cross, to swim), present participle, ātmanepada

Prefix: pra

Root: tṛ (class 1)

Note: Refers to the implied agent 'one'

च (ca) - and

(indeclinable)

कीर्तयेत (kīrtayeta) - should praise, should mention, should remember

(verb)

3rd person , singular, active, optative (liṅ) of kīrtay

Optative Mood

3rd person singular, optative, active voice, from causative of √kṛt (to cut, but here meaning to mention)

Root: kṛt (class 10)

पितामहान् (pitāmahān) - paternal grandfathers, ancestors

(noun)

Accusative, masculine, plural of pitāmaha

pitāmaha - paternal grandfather, great-grandfather, ancestor

नदीम् (nadīm) - river

(noun)

Accusative, feminine, singular of nadī

nadī - river, stream

आसाद्य (āsādya) - having reached, having obtained

(indeclinable)

Absolutive/Gerund

from ā- + √sad (to sit, to go) with suffix -ya (after upasarga)

Prefix: ā

Root: sad (class 1)

कुर्वीत (kurvīta) - should do, should perform

(verb)

3rd person , singular, middle, optative (liṅ) of kṛ

Optative Mood

3rd person singular, optative, middle voice

Root: kṛ (class 8)

पितॄणाम् (pitṝṇām) - of the ancestors, of the fathers

(noun)

Genitive, masculine, plural of pitṛ

pitṛ - father, ancestor, forefathers

पिण्डतर्पणम् (piṇḍatarpaṇam) - offering of rice balls and water libation

(noun)

Accusative, neuter, singular of piṇḍatarpaṇa

piṇḍatarpaṇa - offering of rice balls and water libations for ancestors

Compound type : tatpurusha (piṇḍa+tarpaṇa)

• piṇḍa – ball, lump, rice ball (offering)
  noun (masculine)
• tarpaṇa – satisfying, refreshing, libation, offering
  noun (neuter)
  from √tṛp (to satisfy)
  Root: tṛp (class 4)