Yusuf 12:15

Falamma thahaboo bihiwaajmaAAoo an yajAAaloohu fee ghayabati aljubbi waawhaynailayhi latunabi-annahum bi-amrihim hatha wahum layashAAuroon

So when they took him [out] and agreed to put him into the bottom of the well... But We inspired to him, "You will surely inform them [someday] about this affair of theirs while they do not perceive [your identity]."

So, when they went away with him and were determined to put him in the bottom of a pit, (they did accordingly). And We revealed to him (Yūsuf), “You will (one day) remind them of this deed of theirs, and they will not recognize (you).”