Bhagavad Gīta Bhāshya
B.G 2.17
अविनाशि तु तद्विद्धि येन सर्वमिदं ततम् । विनाशमव्ययस्यास्य न कश्चित्कर्तुमर्हति ॥ २-१७॥
Indestructible is THAT, pierced by which all this exists. No one is capable of causing the destruction of THAT imperishable.
Gīta Bhāshya 2.17
The destruction of the Lord through instrumentality is denied by using the word 'avinashina'. His imperishable nature is indicated by the word 'avyaya'.
किं बहुना । यद् देशतोनन्तं तन्नित्यमेव वेदाद्यन्यदपीत्याह - अविनाशीति । नापि शापादिना विनाश इत्याह – विनाशमिति । अव्ययं च तत् ॥ १७ ॥
What are those others (without destruction)? Those that are not bound by space, that are everlasting like Vedas, are indicated by the word 'avinashina'. Their destruction through instrumentality is denied by using the word 'vinasham', i.e. destruction. The word 'avyaya', i.e. imperishable, is used to address such principles.

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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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