The Appointment in Samarra

I have read this before somewhere else, if I had to guess I believe this was embedded in on of my fairy tale collections...I wanna say [b:The Complete Fairy Tales of the Brothers Grimm 7292417 The Complete Fairy Tales of the Brothers Grimm Jack D. Zipes https://i.gr-assets.com/images/S/compressed.photo.goodreads.com/books/1267380765l/7292417.SY75.jpg 50400471].