The Daughter of the Commandant by Aleksandr Sergeyevich Pushkin
Pyotr Andreyich Grinyov is the only surviving child of a retired army officer. When Pyotr turns 17, his father sends him into military service in Orenburg. En route Pyotr gets lost in a blizzard, but is rescued by a mysterious man. As a token of his gratitude, Pyotr gives the guide his hareskin jacket.