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Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad-zuhd:680 – ʿAbdullāh > Abū Maʿmar > Sufyān b. ʿUyaynah

[Machine] 'Uthman, may Allah have mercy on him, said: "If your hearts were purified, you would never have enough of Allah's words."  

الزهد لأحمد:٦٨٠ – حَدَّثَنَا عَبْدُ اللَّهِ حَدَّثَنِي أَبُو مَعْمَرٍ حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ قَالَ

قَالَ عُثْمَانُ رَحِمَهُ اللَّهُ «لَوْ طَهُرَتْ قُلُوبُكُمْ مَا شَبِعْتُمْ مِنْ كَلَامِ اللَّهِ ﷻ»  

See similar narrations below:

Collected by Suyūṭī