Usamah (may Allah be pleased with him) said: Listen, I do not say to any man, 'You are the best of people,' after I heard the Messenger of Allah (peace and blessings be upon him) say: "A man will be brought on the Day of Resurrection" (and the narrator narrated the complete hadith further).
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 399