Hasan on ‘Ilm: Knowledge is two types, beneficial or hypocritical

Hisham reported: Al-Hasan al-Basri, may Allah have mercy on him, said, “Know is two types: Know in the heart is that which benefits. Knowledge on the tongue will be an indictment against the son of Adam.”

Source: Sunan al-Dārimī 376

عَنِ هِشَام عَنِ الْحَسَنِ البصري رحمه الله قَالَ الْعِلْمُ عِلْمَانِ فَعِلْمٌ فِي الْقَلْبِ فَذَلِكَ الْعِلْمُ النَّافِعُ وَعِلْمٌ عَلَى اللِّسَانِ فَذَلِكَ حُجَّةُ اللَّهِ عَلَى ابْنِ آدَمَ

376 سنن الدارمي باب التوبيخ لمن يطلب العلم لغير الله