Quran 8:21 from Surah Al-Anfaal on Divine Marvels.
وَلَا تَكُونُواْ كَٱلَّذِينَ قَالُواْ سَمِعۡنَا وَهُمۡ لَا يَسۡمَعُونَ
English translation: And (do) not be like those who say We heard while they do not hear
Transliteration: wala takunu ka-alladhina qalu sami'na wahum la yasma'una