Mundakōpanishad Bhāshya
Mundaka 2.03
yasyāgnihotramadarśapūrṇamāsamanāgrayaṇamatithivarjitaṃ ca। ahutamavaiśvadevamavidhinā huta māsaptamāṃstasya lokān hinasti ॥3॥
The one who performs Agnihotra without observing the new moon and full moon rituals, without offering the first fruits, without hosting guests, without the Vaiśvadeva offering, or is performed improperly, destroys his worlds for seven months.

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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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