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

Tantrasāra Saṅgraha

तद्रूपभेदाः पञ्चाशन्मूर्तयो मम चापराः। पञ्चाशद्वर्णवाच्यास्ता वर्णास्तारार्णभेदिताः ॥५॥

Further variations of my forms are fifty. They are conveyed by fifty letters of the Sanskrit alphabets. They originate from the eight sounds that correspond to Pranava.

A pictorial reprasentation of how everything is derived from the Pranava, 'Om':

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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