Sufyan reported: Uthman, may Allah be pleased with him, said, “If our hearts were pure, we would never be tired of the speech of Allah.”
Source: Ḥilyat al-Awliyā’ 7/272
عن سُفْيَان قَالَ قَالَ عُثْمَانُ رَضِيَ اللهُ عَنْهُ لَوْ أَنَّ قُلُوبَنَا طَهُرَتْ مَا شَبِعَتْ مِنْ كَلَامِ اللهِ
7/272 حلية الأولياء لأبي نعيم
