महाभारतः mahābhārataḥ - book-12, chapter-47, verse-27

ऋग्यजुःसामधामानं दशार्धहविराकृतिम् ।
यं सप्ततन्तुं तन्वन्ति तस्मै यज्ञात्मने नमः ॥२७॥

27. ṛgyajuḥsāmadhāmānaṁ daśārdhahavirākṛtim ,
yaṁ saptatantuṁ tanvanti tasmai yajñātmane namaḥ.

27. ṛgyajuḥsāmadhāmānam daśārdhahavirākṛtim yam
saptatantum tanvanti tasmai yajñātmane namaḥ

27. yam ṛgyajuḥsāmadhāmānam daśārdhahavirākṛtim saptatantum tanvanti,
tasmai yajñātmane namaḥ

27. Salutations to him who is the foundation of the Rig, Yajur, and Sama Vedas, whose form embodies the five oblations, and whom they elaborate as the seven-threaded Vedic ritual (yajña). Salutations to that Self of the Vedic ritual (yajñātman).

Words meanings summery:

• ऋग्यजुःसामधामानम् (ṛgyajuḥsāmadhāmānam) - whose abode is Ṛg, Yajur, Sāma (Vedas)

• दशार्धहविराकृतिम् (daśārdhahavirākṛtim) - whose form comprises the five oblations

• यम् (yam) - whom

• सप्ततन्तुम् (saptatantum) - seven-threaded (referring to Vedic ritual)

• तन्वन्ति (tanvanti) - they extend, they perform, they spread

• तस्मै (tasmai) - to that

• यज्ञात्मने (yajñātmane) - to the Self of the Vedic ritual (yajña)

• नमः (namaḥ) - salutation, homage

Words meanings and morphology

ऋग्यजुःसामधामानम् (ṛgyajuḥsāmadhāmānam) - whose abode is Ṛg, Yajur, Sāma (Vedas)

(noun)

Accusative, masculine, singular of ṛgyajuḥsāmadhāman

ṛgyajuḥsāmadhāman - one whose abode or foundation is the Rig, Yajur, and Sama Vedas

Compound type : bahuvrīhi (ṛgyajussāma+dhāman)

• ṛgyajussāma – the Rig, Yajur, and Sama Vedas (collectively)
  noun (neuter)
• dhāman – abode, foundation, essence, light
  noun (neuter)

दशार्धहविराकृतिम् (daśārdhahavirākṛtim) - whose form comprises the five oblations

(noun)

Accusative, masculine, singular of daśārdhahavirākṛti

daśārdhahavirākṛti - one whose form (ākṛti) consists of the five (daśārdha) oblations (havis)

Compound type : bahuvrīhi (daśārdha+havis+ākṛti)

• daśārdha – five (literally 'half of ten')
  adjective (neuter)
• havis – oblation, sacrificial offering
  noun (neuter)
• ākṛti – form, shape, appearance
  noun (feminine)

यम् (yam) - whom

(pronoun)

Accusative, masculine, singular of yad

yad - who, which, what (relative pronoun)

सप्ततन्तुम् (saptatantum) - seven-threaded (referring to Vedic ritual)

(noun)

Accusative, masculine, singular of saptatantu

saptatantu - having seven threads; the seven-threaded Vedic ritual (yajña)

Compound type : bahuvrīhi (saptan+tantu)

• saptan – seven
  numeral
• tantu – thread, string, continuous line
  noun (masculine)

तन्वन्ति (tanvanti) - they extend, they perform, they spread

(verb)

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

Root: tan (class 8)

तस्मै (tasmai) - to that

(pronoun)

Dative, masculine, singular of tad

tad - that, he, she, it (demonstrative pronoun)

यज्ञात्मने (yajñātmane) - to the Self of the Vedic ritual (yajña)

(noun)

Dative, masculine, singular of yajñātman

yajñātman - the Self (ātman) of the Vedic ritual (yajña)

Compound type : tatpurusha (yajña+ātman)

• yajña – Vedic ritual, worship, sacrifice
  noun (masculine)
• ātman – self, soul, spirit, essence
  noun (masculine)

नमः (namaḥ) - salutation, homage

(indeclinable)