Surah Al-Kahf (The Cave), Verse 60

وَاِذْ قَالَ مُوْسٰی لِفَتٰىهُ لَاۤ اَبْرَحُ حَتّٰۤی اَبْلُغَ مَجْمَعَ الْبَحْرَیْنِ اَوْ اَمْضِیَ حُقُبًا ۟

Wa iz qaalaa Moosaa lifataahu laaa abrahu hattaaa ablugha majma'al bahrayni aw amdiya huqubaa

“Behold, Moses said to his attendant, "I will not give up until I reach the junction of the two seas or (until) I spend years and years in travel."”

Quran 18:60 (Yusuf Ali Translation)