It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Allah, the Mighty and Majestic, will take the scholars away (from the world), and knowledge will be taken away along with them. Then young and ignorant people will arise who will leap upon one another (and come to blows) the way donkeys mount one another, and the elder (and man of knowledge) among them will be regarded as utterly weak and helpless."
Imam al-Tabarani (may Allah have mercy on him) said: "No one narrated this hadith from Amr bin al-Harith (may Allah have mercy on him) except Rishdin (may Allah have mercy on him), and Hajjaj bin Rishdin (may Allah have mercy on him) is alone in narrating it."
Hadith Referenceالمعجم الأوسط / باب الألف / 1892
Hadith Gradingمحدثین:إسناده ضعيف لضعف حجاج بن رشدين وأبيه
Hadith Takhrij«قال الهيثمي: فيه حجاج بن رشدين بن سعد عن أبيه والحجاج ضعفه ابن عدي ولم يوثقه أحد وأبوه اختلف في الاحتجاج به والأكثر على تضعيفه «مجمع الزوائد ومنبع الفوائد، ج 1، ص 201»» «قال ابن حجر: سنده ضعيف «فتح الباري شرح صحيح البخاري، ج 13، ص 299»»