وَلَا تَكُوۡنُوۡا كَالَّذِيۡنَ قَالُوۡا سَمِعۡنَا وَهُمۡ لَا يَسۡمَعُوۡنَۚ‏

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