Surah Al-Israa, Verse 8
عَسَىٰ رَبُّكُمْ أَن يَرْحَمَكُمْ ۚ وَإِنْ عُدتُّمْ عُدْنَا ۘ وَجَعَلْنَا جَهَنَّمَ لِلْكَٰفِرِينَ حَصِيرًا
Translation — Sahih International
[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."
Source
Kur'an-ı Kerim, İsrâ Suresi 17:8
https://kuran.diyanet.gov.tr/mushaf/kuran-meal-2/17-suresi-8-ayet