Vaisesika Sūtra 2.1.6

sarpirjatumadhūcchiṣṭānāmagnisaṁyōgād dravatvamadbhiḥ sāmānyam ॥6॥

The remains of clarified butter, wax, and honey - by union with fire, gains "liquid-ness", because of their generality, i.e. common property.