Ashtangasamgraha 17.46

17.46

yāti tailaṃ ca kaṭutāṃ kaṭukāpi na pippalī |

yathārasatve pākānāṃ na syādevaṃ viparyayaḥ ||

bhāvitānāṃ gavāṃ mūtre ṣaṣṭikānāṃ ca taṇḍulaiḥ ||

And oil goes to pungency, while long pepper, though pungent, does not;
if post-digestive effects corresponded to taste, there would not be such an inversion.

with grains of ṣaṣṭika rice soaked in cow's urine.