Hilal bin Yasaf al-Ashja'i (may Allah have mercy on him) said: I heard Sayyiduna Imran bin Husayn (may Allah be pleased with him) say: The Messenger of Allah (peace and blessings be upon him) said: "The best of people is my generation, then those who come after them, then those who come after them. Then people will come who will be fat and will love obesity, and who will give testimony before they are asked for it."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 15676