Ma'ruf bin Abi Ma'ruf al-Mawsili said: When Umar (may Allah be pleased with him) was wounded, I heard a voice: "Whoever would weep, let him weep over Islam. The people are close to ruin, though the era has not yet grown old. The world has turned its back and its good has departed, and whoever believed in the promise has grown weary of it."
Hadith Referenceالمعجم الكبير للطبراني / العشرة / 61