For your good, Karna was deprived of his ear-rings by Indra with the aid of illusion. In the same manner that subjugator of hostile troops was deprived of his armour.
त्वद्धितार्थं तु शक्रेण मायापहृतकुण्डलः। विहीनकवचश्चायं कृतः परपुरंजयः॥