महाभारतः mahābhārataḥ - book-2, chapter-8, verse-27

अग्निष्वात्ताश्च पितरः फेनपाश्चोष्मपाश्च ये ।
स्वधावन्तो बर्हिषदो मूर्तिमन्तस्तथापरे ॥२७॥

27. agniṣvāttāśca pitaraḥ phenapāścoṣmapāśca ye ,
svadhāvanto barhiṣado mūrtimantastathāpare.

27. agniṣvāttāḥ ca pitaraḥ phenapāḥ ca uṣmapāḥ ca ye
svadhāvantaḥ barhiṣadaḥ mūrtimantaḥ tathā apare

27. There are ancestors (Pitṛs) such as the Agniṣvāttas, the foam-drinkers, and the vapor-drinkers. Similarly, there are others who partake of the svadhā offerings and those who sit on the sacrificial grass; all these are embodied.

Words meanings summery:

• अग्निष्वात्ताः (agniṣvāttāḥ) - a class of Pitṛs (ancestors)

• च (ca) - and, also

• पितरः (pitaraḥ) - ancestors, fathers, forefathers, manes

• फेनपाः (phenapāḥ) - foam-drinkers, a class of Pitṛs

• च (ca) - and, also

• उष्मपाः (uṣmapāḥ) - vapor-drinkers, a class of Pitṛs

• च (ca) - and, also

• ये (ye) - who, those who

• स्वधावन्तह्̣ (svadhāvantaḥ) - those possessing svadhā, those who receive svadhā offerings

• बर्हिषदः (barhiṣadaḥ) - those who sit on the sacrificial grass, a class of Pitṛs

• मूर्तिमन्तः (mūrtimantaḥ) - embodied, having form, incarnated

• तथा (tathā) - similarly, thus, also

• अपरे (apare) - others, other ones

Words meanings and morphology

अग्निष्वात्ताः (agniṣvāttāḥ) - a class of Pitṛs (ancestors)

(noun)

Nominative, masculine, plural of agniṣvātta

agniṣvātta - those whose offerings are eaten by Agni, a specific class of ancestors

Past Passive Participle

derived from agni (fire) and svātta (eaten, consumed)

Compound type : tatpurusha (agni+svātta)

• agni – fire, god of fire
  noun (masculine)
• svātta – eaten, consumed, tasted
  adjective (masculine)
  Past Passive Participle
  from root svad (to taste, to eat)
  Root: svad (class 1)

Note: Refers to a specific class of Pitṛs.

च (ca) - and, also

(indeclinable)

पितरः (pitaraḥ) - ancestors, fathers, forefathers, manes

(noun)

Nominative, masculine, plural of pitṛ

pitṛ - father, ancestor, forefathers

Note: Refers to the collective ancestors or Pitṛs.

फेनपाः (phenapāḥ) - foam-drinkers, a class of Pitṛs

(noun)

Nominative, masculine, plural of phenapa

phenapa - foam-drinker, a specific class of ancestors (Pitṛs)

Compound type : tatpurusha (phena+pa)

• phena – foam, froth
  noun (masculine)
• pa – drinking, one who drinks
  adjective (masculine)
  agent noun
  from root pā (to drink)
  Root: pā (class 1)

Note: Refers to a specific class of Pitṛs.

च (ca) - and, also

(indeclinable)

उष्मपाः (uṣmapāḥ) - vapor-drinkers, a class of Pitṛs

(noun)

Nominative, masculine, plural of uṣmapa

uṣmapa - vapor-drinker, a specific class of ancestors (Pitṛs)

Compound type : tatpurusha (uṣman+pa)

• uṣman – heat, vapor, steam
  noun (masculine)
• pa – drinking, one who drinks
  adjective (masculine)
  agent noun
  from root pā (to drink)
  Root: pā (class 1)

Note: Refers to a specific class of Pitṛs.

च (ca) - and, also

(indeclinable)

ये (ye) - who, those who

(pronoun)

Nominative, masculine, plural of yad

yad - which, who, what

Note: Relative pronoun.

स्वधावन्तह्̣ (svadhāvantaḥ) - those possessing svadhā, those who receive svadhā offerings

(adjective)

Nominative, masculine, plural of svadhāvant

svadhāvant - possessing svadhā, receiving svadhā

derived with matup suffix from svadhā

Note: Qualifies 'pitaraḥ' (implied). Svadhā is a specific oblation to ancestors.

बर्हिषदः (barhiṣadaḥ) - those who sit on the sacrificial grass, a class of Pitṛs

(noun)

Nominative, masculine, plural of barhiṣad

barhiṣad - one who sits on the sacred grass, a class of ancestors (Pitṛs)

Compound type : tatpurusha (barhis+sad)

• barhis – sacrificial grass, sacred grass
  noun (neuter)
• sad – sitting, one who sits
  adjective (masculine)
  agent noun
  from root sad (to sit)
  Root: sad (class 1)

Note: Refers to a specific class of Pitṛs.

मूर्तिमन्तः (mūrtimantaḥ) - embodied, having form, incarnated

(adjective)

Nominative, masculine, plural of mūrtimat

mūrtimat - having form, embodied, material

derived with matup suffix from mūrti (form)

Note: Qualifies the various Pitṛ classes.

तथा (tathā) - similarly, thus, also

(indeclinable)

Note: Connects the previous classes to 'others'.

अपरे (apare) - others, other ones

(adjective)

Nominative, masculine, plural of apara

apara - other, another, different

Note: Implied to refer to other classes of Pitṛs.