2 verses have
bottom
in Edition Clear Qur'an by Talal Itani / Yusuf (Joseph)

12:10One of them said, “Do not kill Joseph, but throw him into the bottom of the well; some caravan may pick him up—if you must do something.”

12:15So they went away with him, and agreed to put him at the bottom of the well. And We inspired him, “You will inform them of this deed of theirs when they are unaware.”