Surah At-Taubah (The Repentance), Verse 45

اِنَّمَا یَسْتَاْذِنُكَ الَّذِیْنَ لَا یُؤْمِنُوْنَ بِاللّٰهِ وَالْیَوْمِ الْاٰخِرِ وَارْتَابَتْ قُلُوْبُهُمْ فَهُمْ فِیْ رَیْبِهِمْ یَتَرَدَّدُوْنَ ۟

Innamaa yastaazinukal lazeena laa yu'minoona billaahi wal Yawmil Aakhiri wartaabat quloobuhum fahum fee raibihim yataraddadoon

“Only those ask thee for exemption who believe not in Allah and the Last Day, and whose hearts are in doubt, so that they are tossed in their doubts to and fro.”

Quran 9:45 (Yusuf Ali Translation)