agnidhūmayor ivānvayavavyatirekābhyāṃ pīnatvabhojanayoḥ kāryakāraṇabhāvoniścito yatas tasmād vastunaḥ pīnatvāt kāryatvena sambandhād vastuto bhojanasya gatiryuktā /
Just as between fire and smoke, the cause-effect relation between fatness and eating is ascertained through positive and negative concomitance; therefore, from one thing (fatness), through [its] relation as an effect, the cognition of another thing (eating) is justified.