Leviticus 15:4-8

4Every bed on which the man with the discharge lies becomes unclean, and everything on which he sits becomes unclean.

5Anyone, moreover, who touches his bed shall wash his clothes and bathe in water and be unclean until evening;

6and whoever sits on the thing on which the man with the discharge has been sitting, shall wash his clothes and bathe in water and be unclean until evening.

7Also whoever touches the 1man with the discharge shall wash his clothes and bathe in water and be unclean until evening.

8Or if the man with the discharge spits on one who is clean, he too shall wash his clothes and bathe in water and be unclean until evening.