Surah Al-Isra' (The Night Journey), Verse 8

عَسٰی رَبُّكُمْ اَنْ یَّرْحَمَكُمْ وَاِنْ عُدْتُّمْ عُدْنَا وَجَعَلْنَا جَهَنَّمَ لِلْكٰفِرِیْنَ حَصِیْرًا ۟

Asaa rabbukum anyyarhamakum; wa in 'uttum 'udnaa; wa ja'alnaa jahannama lilkaafireena haseera

“It may be that your Lord may (yet) show Mercy unto you; but if ye revert (to your sins), We shall revert (to Our punishments): And we have made Hell a prison for those who reject (all Faith).”

Quran 17:8 (Yusuf Ali Translation)