 तदेतत्कारणं पश्य यदर्थं त्वं मया हतः।भ्रातुर्वर्तसि भार्यायां त्यक्त्वा धर्मं सनातन।। 
 Now know the reason why I struck you down. Having abandoned the eternal  law, you are living with your younger brothers wife. 