BT AZ 28b(26) :רטיבא ליבישא ויבישא לרטיבא‏ : (use) something wet for a dry one (a sore) and something dry for a wet one
See the entire entry for yabbīš adj. dry

BT AZ 28b(26) :רטיבא ליבישא ויבישא לרטיבא‏ : a wet (medicine is effective) for a dry (sore), and a dry one for a wet one
See the entire entry for raṭṭīḇ adj. moist