information:extraction, stylistic:tone
Further campaign against Ilkhanate

In 1277, Baybars invaded the Seljuq Sultanate of Rûm, then controlled by the Ilkhanate Mongols. He defeated a Ilkhanate army at the Battle of Elbistan and captured the city of Kayseri. Baybars himself went with a few troops to deal with the Mongol right flank that was pounding his left wing. Baybars ordered a force from the army from Hama to reinforce his left. The large Mamluk numbers were able to overwhelm the Mongol force, who instead of retreating dismounted from their horses. Some Mongols were able to escape and took up positions on the hills. Once they became surrounded they once again dismounted, and fought to the death. During the celebration of victory, Baybars said that "How can I be happy? Before I had thought that I and my servants would defeat the Mongols, but my left wing was beaten by them. Only Allah helped us".

The possibility of a new Mongol army convinced Baybars to return to Syria, since he was far away from his bases and supply line. As the Mamluk army returned to Syria the commander of the Mamluk vanguard, Izz al-Din Aybeg al-Shaykhi, deserted to the Mongols. Pervâne sent a letter to Baybars asking him to delay his departure. Baybars chastised him for not aiding him during the Battle of Elbistan. Baybars told him he was leaving for Sivas to mislead Pervâne and the Mongols as to his true destination. Baybars also sent Taybars al-Waziri with a force to raid the Armenian town of al-Rummana, whose inhabitants had hidden the Mongols earlier.