Sayyiduna Abu al-Darda' (may Allah be pleased with him) says: "After Sayyiduna Uthman (may Allah be pleased with him) there was no Madinah, and after Sayyiduna Mu'awiyah (may Allah be pleased with him) there was no prosperity." The Prophet (peace and blessings be upon him) said: "Allah Almighty has promised me that Abu al-Darda' will accept Islam." (The narrator says:) And he accepted Islam.
Al-Tabarani recorded it, and its chain is hasan (good).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب المناقب / 14556