He tried to cut the head of Dakṣa with hymns as well as weapons, but still it was hard to cut even the surface of the skin of Dakṣa’s head. Thus Vīrabhadra was exceedingly bewildered.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
शस्त्रैरस्त्रान्वितैरेवमनिर्भिन्नत्वचं हरः । विस्मयं परमापन्नो दध्यौ पशुपतिश्चिरम्
śastrairastrānvitairevamanirbhinnatvacaṃ haraḥ | vismayaṃ paramāpanno dadhyau paśupatiściram
SB 4.5.23