But as for one who believes and does righteousness, he will have a reward of Paradise, and we will speak to him from our command with ease."

Then he followed a way

Until, when he came to the rising of the sun, he found it rising on a people for whom We had not made against it any shield.

Thus. And We had encompassed [all] that he had in knowledge.

Then he followed a way

Until, when he reached [a pass] between two mountains, he found beside them a people who could hardly understand [his] speech.

They said, "O Dhul-Qarnayn, indeed Gog and Magog are [great] corrupters in the land. So may we assign for you an expenditure that you might make between us and them a barrier?"