Surah Al-Waqi'ah, Ayah 78
Quran 56:78 · The Inevitable · Makki · Para 27 · Page 537
فِیْ كِتٰبٍ مَّكْنُوْنٍ ۟ۙ
Transliteration
Fee kitabin maknoon
Saheeh International
In a Register well-protected;.
Al-Mukhtasar fi Tafsir
It is in a record preserved from the eyes of people, i.e. the Preserved Tablet.
Tafsir Ibn Kathir (abridged)
Explains 56:75–56:82 together — read it on 56:75