In plain words
The poet, to his senses: The wondrous Lord, who took the form of a dwarf, a bachelor student, a treasure of rubies, see, I have longed for, brought in and set within my mind, so that he abides there, never apart from me. You most cruel mischief-makers [the senses], who are still here: there is no need to delay; be off. This town is not what it was before; it is under his guard.