It is narrated from Sayyiduna Mirdas al-Aslami (may Allah be pleased with him); he said: The Messenger of Allah (peace and blessings be upon him) said: "The righteous will pass away first, one after another, until only the worthless remain, like the refuse of dates and barley; Allah will not care about them at all."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 17839