It is narrated from Sayyiduna Abu Hurayrah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Allah Almighty will not take knowledge away from you by snatching it after He has given it to you; rather, He will take away the scholars along with their knowledge, and the people will be left ignorant. They will be asked questions, and they will give rulings (without knowledge), so they will go astray themselves and lead others astray."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Sa'id al-Maqburi except Ya'qub bin al-Ashajj, no one from Ya'qub except Usamah bin Zayd, and no one from Usamah except Umar bin al-Sa'ib, and al-Layth is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الميم / 8737
Hadith Gradingمحدثین:إسناده ضعيف لضعف عبد الله بن صالح كاتب الليث
Hadith Takhrij«قال الهيثمي: فيه عبد الله بن صالح كاتب الليث وهو ضعيف وقد وثق «مجمع الزوائد ومنبع الفوائد، ج 1، ص 201»» «أخرجه الطبراني فى «الأوسط» برقم: 6403»