أَخْبَرَنَا مُحَمَّدُ بْنُ الْمُبَارَكِ ، حَدَّثَنَا الْوَلِيدُ ، عَنْ الْأَوْزَاعِيِّ ، عَنْ الزُّهْرِيِّ ، قَالَ :" آفَةُ الْعِلْمِ النِّسْيَانُ، وَتَرْكُ الْمُذَاكَرَةِ "

Muhammad bin Al-Mubarak told us, Al-Walid told us, on the authority of Al-Awza’i, on the authority of Al-Zuhri, he said: “The scourge of knowledge is forgetfulness and abandonment of study.”