Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) says: "You are living in a time in which the orators are few and the scholars are many; they make the prayer long and keep the sermon short. Soon a time will come upon you in which the orators will be many and the scholars few." After this the narrator mentioned the full hadith.
Imam al-Tabarani recorded it in al-Mu'jam al-Kabir, and its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الصلاة / 3160