Is the saying, "Beware of the evil of one to whom you have shown kindness," a noble Prophetic Hadith? Thank you.

"Beware the evil of him upon whom you have conferred good" is not a prophetic hadith. Rather, it is a saying attributed to some of the early Muslims (Salaf) and applies to the wicked, not the noble. It is important to be cautious not to attribute hadiths to the Messenger of Allah, peace and blessings be upon him, except for what has been authentically established, for he, peace and blessings be upon him, said: "Whoever narrates a hadith from me and he believes it to be a lie, then he is one of the two liars [the narrator or the one who transmits from him]."