Surah Al-Mu'minun, ayah 69

أَمۡ لَمۡ يَعۡرِفُواْ رَسُولَهُمۡ فَهُمۡ لَهُۥ مُنكِرُونَ ٦٩

Am lam ya'rifū rasūlahum fahum lahū munkirūn

Or did they not know their Messenger, so they are toward him disacknowledging?