Surah At-Tawbah, Verse 45

إِنَّمَا يَسۡتَـٔۡذِنُكَ ٱلَّذِينَ لَا يُؤۡمِنُونَ بِٱللَّهِ وَٱلۡيَوۡمِ ٱلۡأٓخِرِ وَٱرۡتَابَتۡ قُلُوبُهُمۡ فَهُمۡ فِي رَيۡبِهِمۡ يَتَرَدَّدُونَ٤٥

innamā yastadhinuka alladhīna lā yu'minūna bil-lahi wal-yawmi l-ākhiri wa-ir'tābat qulūbuhum fahum fī raybihim yataraddadūna

Only those would ask permission of you who do not believe in Allāh and the Last Day and whose hearts have doubted, and they, in their doubt, are hesitating.