Madhvacharya's Dvaita Vedanta and translation of Sarvamoola containing Bhagavad Gita, Upanishads, and Brahmasutra.

Bhagavad Gīta Tātparya

B.G 4.31

यज्ञशिष्टामृतभुजो यान्ति ब्रह्म सनातनम्। नायं लोकोऽस्त्ययज्ञस्य कुतोऽन्यः कुरुसत्तम ॥३१॥

yajñaśiṣṭāmr̥tabhujo yānti brahma sanātanam। nāyaṁ loko'styayajñasya kuto'nyaḥ kurusattama ॥31॥

Those enjoy the remnents of the Yajna attain that eternal supreme Brahman. O Arjuna, This world is not for those non performers of Yajna, much less the other.

Gīta Tātparya 4.31

All internal (mental) and external forms of Yajna are ultimately worship of lord Vishnu only. It is He who grants results.

By worship of the supreme Brahman only control over senses and other faculties is obtained. (The worship is performed) through Yajna, not without, is the implied meaning everywhere.

"He may worship Him alone with prescribed means as there is no other path. He alone, the lord Vishnu, is the Yajna, whether it is mental or external."

-states Brahma Vaivarta Purana.

बहुचित्रजगद्बहुधाकरणात् परशक्तिरनन्तगुणः परमः ।
सुखरूपममुष्य पदं परमं स्मरतस्तु भविष्यति तत्सततम् ॥
"The one who has created this variegated vast universe with varied forms has infinite power and is of infinite auspicious qualities. He certainly bestows the highest state of bliss to those who meditate on his ever happy essence." -Dwādasha stōtra 4.3

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