Tafseer Ibn Kathir of AL MA'ARIJ [4]

تَعْرُجُ الْمَلَائِكَةُ وَالرُّوحُ إِلَيْهِ فِي يَوْمٍ كَانَ مِقْدَارُهُ خَمْسِينَ أَلْفَ سَنَةٍ

The angels and the Spirit will ascend to Him during a Day the extent of which is fifty thousand years.