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

उपसंहृत्य तत् सर्वं ब्रह्मचारी जितेन्द्रियः। विश्वायेति च मन्त्रेण ततः स्वापं समाचरेत् ॥११॥

Then, meditating 'Vishvāya' mantra, withholding all desires, observing celibacy, with conquered senses, one should practice a dream state, i.e. go to sleep.

The 'Vishvāya' verse to be meditated before going to sleep:

विश्वाय विश्वपतये विश्वेश्वराय विश्वसंभवाय श्री गोविन्दाय नमो नमः॥

Obeisances to the universal form, to the master of the universal form, to the lord of the universal form, to one who makes the universal form possible; I bow to that lord Gōvinda repeatedly.

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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