Ahmad ibn Salih al-Misri and ‘Abdullahi ibn Wahb said that Imam Malik {May Allah have mercy upon them} said:
وَقَالَ أَحْمَد بْن صَالِح الْمِصْرِيّ عَنْ اِبْن وَهْب عَنْ مَالِك قَالَ : إِنَّ الْعِلْم لَيْسَ بِكَثْرَةِ الرِّوَايَة وَإِنَّمَا الْعِلْم نُور يَجْعَلهُ اللَّه فِي الْقَلْب .
“ Knowledge does not consist in narrating much. Knowledge is but a light which Allah places in the heart.”
{Tafsir Ibn Kathir, Volume 3 pg. 555 in relation to 35:27 and others}