Magi: The Labyrinth of Magic Vol. 2 (manga)

Aladdin and Alibaba have entered the Dungeon of Qishan hoping to find hidden treasure—but danger's found them! A horde of slimes closes in on them, while Lord Jamil and his slaves head into the dungeon looking to intercept Aladdin and grab any riches he may have found! But these rivals have more to worry about than each other, and new friends, new enemies and amazing riches are yet to be discovered!