At night in the Hospital Wing after McLaggen injures him in a Quidditch match, Harry summons Kreacher and Dobby and orders them to tail Malfoy and figure out what he’s up to. Dobby punches Kreacher in the mouth after he insults Harry (HBP19).
Harry instructs Dobby and Kreacher to tail Malfoy
Date evening March 8th, 1997
Certainty Inferred from canon
Location in Canon HBP19: Elf Tails
Type of Event Wizarding world