Leviticus 15:9
Any means of riding the man with a discharge rides on will be unclean.
Genesis 31:34
(Now Rachel had taken the idols and put them inside her camel's saddle and sat on them.) Laban searched the whole tent, but did not find them.
Treasury of Scripture Knowledge
Summary
And what saddle soever he rideth upon that hath the issue shall be unclean.
General references
Bible References
General references
Leviticus 15:20
Anything she lies on during her menstruation will be unclean, and anything she sits on will be unclean.