Who gave Harry the Marauder's Map?

The story behind the answer

Fred and George Weasley gave Harry the Marauder’s Map in Prisoner of Azkaban, having nicked it from Filch’s confiscated items. The twins—masters of mischief—recognized a fellow rule-bender and passed the map to Harry so he could find secret passages to Hogsmeade. Ron didn’t have it, and while Sirius Black and Remus Lupin helped create the map, they didn’t give it