Hazrat Ibn Umar (may Allah be pleased with them both) narrated from Hazrat Bilal (may Allah be pleased with him) that the Noble Prophet (peace and blessings be upon him) prayed inside the Ka'bah, while Hazrat Ibn Abbas (may Allah be pleased with him) used to say that the Noble Prophet (peace and blessings be upon him) did not pray inside the Ka'bah, rather he proclaimed takbeer in its corners.