Surah Al-Anfal, Verse 21

وَلَا تَكُونُواْ كَٱلَّذِينَ قَالُواْ سَمِعۡنَا وَهُمۡ لَا يَسۡمَعُونَ٢١

walā takūnū ka-alladhīna qālū samiʿ'nā wahum lā yasmaʿūna

And do not be like those who say, "We have heard," while they do not hear.