Qur'an 4:143

مُّذَبْذَبِينَ بَيْنَ ذَٰلِكَ لَآ إِلَىٰ هَـٰٓؤُلَآءِ وَلَآ إِلَىٰ هَـٰٓؤُلَآءِ ۚ وَمَن يُضْلِلِ ٱللَّهُ فَلَن تَجِدَ لَهُۥ سَبِيلًا

“Wavering between them, [belonging] neither to these [i.e., the believers] nor to those [i.e., the disbelievers]. And whoever Allāh sends astray - never will you find for him a way.”

An-Nisaa 4:143 · Saheeh International