al-Sharif al-Radi (d. 406 AH) · Thaqalayn library edition, reproduced verbatim
يَا كُمَيْل بْن زِيَادٍ، إِنَّ هذهِ الْقُلُوبَ أَوْعِيَةٌ فَخَيْرُهَا أَوْعَاهَا فَاحْفَظْ عَنِّي مَا أَقُولُ لَكَ:
O Kumayl, these hearts are containers. The best of them is that which preserves (its contents). So, preserve what I say to you:
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