Ar-Rum 30:6

وَعْدَ ٱللَّهِ ۖ لَا يُخْلِفُ ٱللَّهُ وَعْدَهُۥ وَلَـٰكِنَّ أَكْثَرَ ٱلنَّاسِ لَا يَعْلَمُونَ

Waʿda l-lahi lā yukh'lifu l-lahu waʿdahu walākinna akthara l-nāsi lā yaʿlamūna

[It is] the promise of Allāh. Allāh does not fail in His promise, but most of the people do not know.