Duryodhana said If he be Partha, O son of Radha, then my work is fulfilled. If found out the Pandavas shall have to live in the forest for twelve yeas again.
दुर्योधन उवाच योष पार्थो राधेय कृतं कार्यं भवेन्मम। ज्ञाताः पुनश्चरिष्यन्ति द्वादशाब्दान् विशाम्पते॥