Quran 17, Al-Isra' (The Night Journey) ⓘ

17:8 [Then Allah said], "It is expected, [if you repent], that your Lord will have mercy upon you. But if you return [to sin], We will return [to punishment]. And We have made Hell, for the disbelievers, a prison-bed."

عَسَى رَبُّكُمْ أَنْ يَرْحَمَكُمْ وَإِنْ عُدْتُمْ عُدْنَا وَجَعَلْنَا جَهَنَّمَ لِلْكَافِرِينَ حَصِيرًا