Leviticus 15
10 Ref And anyone touching anything which was under him will be unclean till the evening; anyone taking up any of these things is to have his clothing washed and his body bathed in water and be unclean till evening.
11 And anyone on whom the unclean man puts his hands, without washing them in water, is to have his clothing washed and his body bathed in water and be unclean till evening.