Anandakanda 1.23.222

1.23.222

kṛtvā tadbandhayedvastre ḍolāyantragataṃ pacet /
gomūtre tadgataṃ yāmaṃ naramūtrairdinatrayam //

one should tie it in a cloth and cook it placed inside a swing apparatus;
it should remain in cow's urine for one watch, and in human urine for three days.