ত্বযা by you, ধনুষ: bow's, তত্ ভেদনম্ that breaking, অদ্ভুতম্ astonishing, অচিন্ত্যম্ চ unimaginable, তত্ that, শ্রুত্বা having heard, অহম্ I, অপরম্ another, শুভম্ auspicious, ধনু: bow, গৃহ্য bringing, অনুপ্রাপ্ত: have come here.
The fact that you have broken Siva's bow is an astonishing act. It is beyond imagination. Having heard it I have come here with another auspicious bow.