He told him that it was the Sack of Knowledge, and he was learning marvelous things in it. The student asked to change places with him. The poor brother agreed and hefted him up, telling him that he was learning something already, but after an hour, he sent someone to let the student down.
He explained to him that this was the Sack of Knowledge, where he was learning extraordinary things. The student requested a swap with him. The poor brother agreed and hoisted him up, telling him that he already knew something, but after an hour, he sent someone to lower the student.