Zavim 5:7-8
Zavim 5:7
If one touches a zav’s discharge, saliva, semen or urine, or the blood of a menstruant woman, he transmits impurity to two degrees and disqualifies trumah one degree more. If he separated (from the source of impurity), he transmits impurity to one degree and disqualifies trumah one degree more. This is true whether he touched or moved it; Rabbi Eliezer adds if he carried it.
Zavim 5:8
If a person carried something that was ridden on, or if he was carried on it or moved it, he transmits impurity to two degrees and disqualifies trumah one degree more. If he separated (from the source of impurity), he transmits impurity to one degree and disqualifies trumah one degree more. If he carried neveila (an animal carcass) or enough purification water to perform a sprinkling, he transmits impurity to two degrees and disqualifies trumah one degree more. If he separated (from the source of impurity), he transmits impurity to one degree and disqualifies trumah one degree more.