Surah At-Tawbah, ayah 74

يَحۡلِفُونَ بِٱللَّهِ مَا قَالُواْ وَلَقَدۡ قَالُواْ كَلِمَةَ ٱلۡكُفۡرِ وَكَفَرُواْ بَعۡدَ إِسۡلَٰمِهِمۡ وَهَمُّواْ بِمَا لَمۡ يَنَالُواْۚ وَمَا نَقَمُوٓاْ إِلَّآ أَنۡ أَغۡنَىٰهُمُ ٱللَّهُ وَرَسُولُهُۥ مِن فَضۡلِهِۦۚ فَإِن يَتُوبُواْ يَكُ خَيۡرٗا لَّهُمۡۖ وَإِن يَتَوَلَّوۡاْ يُعَذِّبۡهُمُ ٱللَّهُ عَذَابًا أَلِيمٗا فِي ٱلدُّنۡيَا وَٱلۡأٓخِرَةِۚ وَمَا لَهُمۡ فِي ٱلۡأَرۡضِ مِن وَلِيّٖ وَلَا نَصِيرٖ ٧٤

Yahlifūna billāhi mā qālū walaqad qālū kalimatal-kufri wakafarū ba'da islāmihim wahammū bimā lam yanālū wamā naqamū illā an aghnāhumullāhu warasūluhū min fadlihī fa in yatūbū yaku khayral lahum wa in yatawallaw yu'addhibhumullāhu 'adhāban alīman fid-dunyā wal-ākhirati wamā lahum fil-ardi min waliyyin walā nasīr

They swear by Allāh that they did not say [anything against the Prophet (ﷺ)] while they had said the word of disbelief and disbelieved after their [pretense of] Islām and planned that which they were not to attain.⁴⁹³ And they were not resentful except [for the fact] that Allāh and His Messenger had enriched them of His bounty.⁴⁹⁴ So if they repent, it is better for them; but if they turn away, Allāh will punish them with a painful punishment in this world and the Hereafter. And there will not be for them on earth any protector or helper.