Sayyiduna Abdullah bin Mas'ud (may Allah be pleased with him) says: "The door of repentance will remain open for the son of Adam until one of three things appears: the rising of the sun from the west, the emergence of the Beast of the Earth, or the emergence of Gog and Magog (Ya'juj and Ma'juj)."
Al-Tabarani recorded it with a munqati' (broken) chain.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التوبة / 17511
Hadith Gradingمحدثین:إسنادہ منقطع۔
Hadith Takhrij«اخرجه الطبراني فى المعجم الكبير (8937)»