Quran 18:64 from Surah Al-Kahf on Divine Marvels.
قَالَ ذَٰلِكَ مَا كُنَّا نَبۡغِۚ فَٱرۡتَدَّا عَلَىٰٓ ءَاثَارِهِمَا قَصَصٗا
English translation: He said That (is) what we were seeking So they returned on their footprints retracing
Transliteration: qala dhalika ma kunna nabghi fa-ir'tadda ala atharihima qasasan