Dalil
العربية

Quran An-Nur 24:7

وَٱلۡخَٰمِسَةُ أَنَّ لَعۡنَتَ ٱللَّهِ عَلَيۡهِ إِن كَانَ مِنَ ٱلۡكَٰذِبِينَ

Translation

And the fifth [oath will be] that the curse of Allāh be upon him if he should be of the liars.