Jāmadagnya-Rāmasya Tapaścaraṇam
The Austerities of Rama Jamadagnya
पितामहस्य लोकानां ब्रह्मणः परमेष्ठिनः / शिरश्छित्त्वा पुनः शंभुर्ब्रह्महत्यामवाप्तवान्
pitāmahasya lokānāṃ brahmaṇaḥ parameṣṭhinaḥ / śiraśchittvā punaḥ śaṃbhurbrahmahatyāmavāptavān
Having severed the head of Brahma, the Grandfather of the worlds and the Supreme Lord, Shambhu once again incurred the sin of Brahmahatya.