John Gill Commentary Leviticus 15:9

"And what saddle soever he that hath the issue rideth upon shall be unclean." — Leviticus 15:9 (ASV)

And what saddle whatever he sits upon that has 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.