12:80 So when they despaired of him, they secluded themselves (in) private consultation. Said the eldest among them, "Do not you know that your father, indeed has taken upon you a promise by Allah, and from before that you failed concerning Yusuf? So never will I leave the land until permits me my father or decides Allah for me, and He (is) the Best (of) the judges.

18:60 And when said Musa to his boy, "Not I will cease until I reach the junction (of) the two seas or I continue (for) a long period."

20:91 They said, "Never we will cease to it being devoted to it until returns to us Musa."