Some time ago, I heard a quote that someone said came from the Qur'an. I have not been able to find it, and I would like to know if it is a real quote. It went something like this: "If a person gains knowledge and does not pass it on, then the knowledge is like a seed that is not planted". I'm not sure if that is exactly right, I am sorry if I am misquoting the Qur'an. Does anybody recognize this?