Śrī Caitanya Caritamrta · Text Ādi 5.60
কৃষ্ণশক্ত্যে প্রকৃতি হয় গৌণ কারণ ।
অগ্নিশক্ত্যে লৌহ যৈছে করয়ে জারণ ॥ ৬০ ॥
kṛṣṇa-śaktye prakṛti haya gauṇa kāraṇa
agni-śaktye lauha yaiche karaye jāraṇa
Thus prakṛti, by the energy of Lord Kṛṣṇa, becomes the secondary cause, just as iron becomes red-hot by the energy of fire.
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