Surah As-Sajdah 32:5

يُدَبِّرُ ٱلْأَمْرَ مِنَ ٱلسَّمَآءِ إِلَى ٱلْأَرْضِ ثُمَّ يَعْرُجُ إِلَيْهِ فِى يَوْمٍ كَانَ مِقْدَارُهُۥٓ أَلْفَ سَنَةٍ مِّمَّا تَعُدُّونَ

He arranges [each] matter from the heaven to the earth; then it will ascend to Him in a Day, the extent of which is a thousand years of those which you count.

Translation: Saheeh International

Tafsir

He directs the command from the heaven to the earth for the duration of this world then it ascends then the command and the direction thereof returns to Him in a day whose measure is a thousand years by your reckoning in this world. In sūrat sa’ala An asker asked the measure is said to be ‘fifty thousand years’ Q. …

Excerpt from Tafsir al-Jalalayn, commentary on 32:5, via Quran.com. The reader has the full commentary and 9 more tafsirs.