Al Kahf Ayah 60

وَإِذْ قَالَ مُوسَىٰ لِفَتَـٰهُ لَآ أَبْرَحُ حَتَّىٰٓ أَبْلُغَ مَجْمَعَ ٱلْبَحْرَيْنِ أَوْ أَمْضِىَ حُقُبًا ٦٠ And ?remember? when Moses said to his young assistant, “I will never give up until I reach the junction of the two seas, even if I travel for ages.”