Leviticus 15:9

And what saddle soever he sitteth upon that hath the issue,
&c.] When he rides upon any beast, horse, ass, or camel, whatever is put upon the creature, and he sits upon it, the saddle, and whatever appertains to it, the housing and girdle:

shall be unclean;
and not fit for another to use, but be defiling to him, as follows.