Imam Ali (AS) said, ‘The best type of knowledge is that which improves you.
ـ الإمامُ عليٌّ (عَلَيهِ الّسَلامُ): خَيرُ العُلومِ ما أصلَحَكَ .
Similar narrations
Ghurar al-Ḥikam #6942Imam Ali (AS) said, The best of knowledge is that by which you reform your right guidance, and the worst of it is that by which you corrupt...
Ghurar al-Ḥikam #6940Imam Ali (AS) said, The best of all knowledge is that which reforms you.