D.C. Code § 16-1501

When a person detains possession of real property without right, or after his right to possession has ceased, the Superior Court of the District of Columbia, on complaint under oath verified by the person aggrieved by the detention, or by his agent or attorney having knowledge of the facts, may issue a summons in English and Spanish to the party complained of to appear and show cause why judgment should not be given against him for the restitution of possession.