Al-Kahf 60

وَإِذْ قَالَ مُوسَىٰ لِفَتَىٰهُ لَآ أَبْرَحُ حَتَّىٰٓ أَبْلُغَ مَجْمَعَ ٱلْبَحْرَيْنِ أَوْ أَمْضِىَ حُقُبًا ﴿٦٠﴾

Waith qala moosa lifatahu la abrahu hatta ablugha majmaAAa albahrayni aw amdiya huquban

And (remember) when Musa (Moses) said to his boy-servant: "I will not give up (travelling) until I reach the junction of the two seas or (until) I spend years and years in travelling." The Noble Quran