 सौमित्रे मित्ररूपेण भ्रातुस्त्वमसि शत्रुवत्।।यस्त्वमस्यामवस्थायां भ्रातरं नाभिपत्स्यसे। 
 Since you, O son of Sumitra,  are not reaching out to your brother in this situation, you are an enemy to your brother in the guise of a friend 