Surah Az-Zalzalah 99:4

The Earthquake · Verse 4 of 8 · Juz 30 · Page 599

يَوْمَئِذٍ تُحَدِّثُ أَخْبَارَهَا

That Day, it will report its news

Translation: Saheeh International

Tafsir

On that day yawma’idhin substitutes for and is the response to idhā ‘when’ it shall relate its chronicles it shall inform of the good and evil deeds committed in it

Excerpt from Tafsir al-Jalalayn, commentary on 99:4, via Quran.com. The reader has the full commentary and 9 more tafsirs.