महाभारतः mahābhārataḥ - book-3, chapter-85, verse-17

अयजद्यत्र कौन्तेय पूर्वमेव पितामहः ।
यत्र भागीरथी पुण्या सदस्यासीद्युधिष्ठिर ॥१७॥

17. ayajadyatra kaunteya pūrvameva pitāmahaḥ ,
yatra bhāgīrathī puṇyā sadasyāsīdyudhiṣṭhira.

17. ayajat yatra kaunteya pūrvam eva pitāmahaḥ
yatra bhāgīrathī puṇyā sadasya āsīt yudhiṣṭhira

17. O son of Kunti, O Yudhishthira, this is the place where the great progenitor (pitāmaha) formerly performed Vedic rituals (yajña), and where the sacred Bhagirathi (Ganges) was present as a participant.

Words meanings summery:

• अयजत् (ayajat) - performed sacrifices, offered sacrifices

• यत्र (yatra) - where, in which place

• कौन्तेय (kaunteya) - O Yudhishthira (as he is being addressed) (O son of Kunti)

• पूर्वम् (pūrvam) - formerly, previously, before

• एव (eva) - indeed, just, only, certainly

• पितामहः (pitāmahaḥ) - the great progenitor (possibly Brahma or a revered ancient ancestor) (grandfather, progenitor, great ancestor, Brahma)

• यत्र (yatra) - where, in which place

• भागीरथी (bhāgīrathī) - the river Bhagirathi (Ganges)

• पुण्या (puṇyā) - holy, sacred, virtuous

• सदस्य (sadasya) - present as a participant or witness (referring to the personified Bhagirathi) (member of an assembly, participant, one present)

• आसीत् (āsīt) - was, existed

• युधिष्ठिर (yudhiṣṭhira) - O Yudhishthira

Words meanings and morphology

अयजत् (ayajat) - performed sacrifices, offered sacrifices

(verb)

3rd person , singular, active, past imperfect (laṅ) of yaj

Imperfect

3rd person singular, parasmaipada

Root: yaj (class 1)

यत्र (yatra) - where, in which place

(indeclinable)

indeclinable adverb of place

कौन्तेय (kaunteya) - O Yudhishthira (as he is being addressed) (O son of Kunti)

(proper noun)

Vocative, masculine, singular of kaunteya

kaunteya - son of Kunti

patronymic from Kuntī

पूर्वम् (pūrvam) - formerly, previously, before

(indeclinable)

adverbial accusative singular neuter of pūrva

एव (eva) - indeed, just, only, certainly

(indeclinable)

particle

पितामहः (pitāmahaḥ) - the great progenitor (possibly Brahma or a revered ancient ancestor) (grandfather, progenitor, great ancestor, Brahma)

(noun)

Nominative, masculine, singular of pitāmaha

pitāmaha - grandfather, progenitor, great ancestor, Brahma

यत्र (yatra) - where, in which place

(indeclinable)

indeclinable adverb of place

भागीरथी (bhāgīrathī) - the river Bhagirathi (Ganges)

(proper noun)

Nominative, feminine, singular of bhāgīrathī

bhāgīrathī - the Ganges river

derived from Bhagīratha

पुण्या (puṇyā) - holy, sacred, virtuous

(adjective)

Nominative, feminine, singular of puṇya

puṇya - holy, sacred, virtuous, meritorious

Note: modifies Bhāgīrathī

सदस्य (sadasya) - present as a participant or witness (referring to the personified Bhagirathi) (member of an assembly, participant, one present)

(noun)

Nominative, feminine, singular of sadasya

sadasya - member of an assembly, participant, one present, pertaining to an assembly

derived from sadas (assembly)

Note: functions as a predicate nominative agreeing with Bhāgīrathī

आसीत् (āsīt) - was, existed

(verb)

3rd person , singular, active, past imperfect (laṅ) of as

Imperfect

3rd person singular, parasmaipada

Root: as (class 2)

युधिष्ठिर (yudhiṣṭhira) - O Yudhishthira

(proper noun)

Vocative, masculine, singular of yudhiṣṭhira

yudhiṣṭhira - Yudhishthira (name of the eldest Pandava brother)

one who is steady in battle (yudhi sthira)

Compound type : bahuvrīhi (yudhi+sthira)

• yudhi – in battle
  indeclinable
  locative of yudh
• sthira – firm, steady, stable
  adjective (masculine)
  Root: sthā (class 1)