Karna said : These two (Bhishma and Drona) are supported by your wealth and favours. They are supposed to be your best friends. What can be more surprising than they should give you advice that is not for your good!
कर्ण उवाच योजितावर्थमानाभ्यां सर्वकार्येष्वनन्तरौ। न मन्त्रयेतां त्वच्छ्रेयः किमद्भुततरं ततः॥