Quran 18:35 from Surah Al-Kahf on Divine Marvels.
وَدَخَلَ جَنَّتَهُۥ وَهُوَ ظَالِمٞ لِّنَفۡسِهِۦ قَالَ مَآ أَظُنُّ أَن تَبِيدَ هَٰذِهِۦٓ أَبَدٗا
English translation: And he entered his garden while he (was) unjust to himself He said Not I think that will perish this ever
Transliteration: wadakhala jannatahu wahuwa zalimun linafsihi qala ma azunnu an tabida hadhihi abadan