Śrī Caitanya Caritamrta · Text Ādi 7.125
তথাপি অচিন্ত্যশক্ত্যে হয় অবিকারী ।
প্রাকৃত চিন্তামণি তাহে দৃষ্টান্ত যে ধরি ॥ ১২৫ ॥
tathāpi acintya-śaktye haya avikārī
prākṛta cintāmaṇi tāhe dṛṣṭānta ye dhari
“Using the example of a touchstone, which by its energy turns iron to gold and yet remains the same, we can understand that although the Supreme Personality of Godhead transforms His innumerable energies, He remains unchanged.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.