It is narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "When you hear someone saying that the people are ruined, then he is the most ruined among them."
Hadith Referenceالادب المفرد / كتاب الأقوال / 759
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه مسلم ، كتاب البر و الصلة : 2623 و أبوداؤد : 4983 - انظر الصحيحة : 3074»