Sayyiduna Abdullah bin Busr (may Allah be pleased with him) narrates that he heard the Prophet (peace and blessings be upon him) say: "Those who have seen me will live to see the Dajjal, or else he will appear close to my death."
Al-Tabarani recorded it in al-Mu'jam al-Awsat from his teacher Muhammad bin Isa bin Shu'ayb, and I do not know him. The rest of its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الفتن - أعاذنا الله منها / 12548