Sayyiduna Abdullah bin Amr (may Allah be pleased with him) narrates: I heard the Prophet (peace and blessings be upon him) recite this verse: "The Day when mankind will stand before the Lord of the worlds." The Prophet (peace and blessings be upon him) said: "What will be your state when Allah Almighty gathers you together just as arrows are gathered in a quiver, and that Day will be fifty thousand years long, and He will not look at you?"
Tabarani recorded it, and its narrators are thiqat (trustworthy).
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 11476