brahma-daṇḍaṁ duratyayam

tasya-his (Nandisvara's); evam-thus; vadatah-words; sapam-the curse; srutva-hearing; dvija-kulaya-unto the brahmanas; vai-indeed; bhrguh-Bhrgu; pratyasrjat-made; sapam-a curse; brahma-dandam-the punishment of a brahmana; duratyayam-insurmountable.