Taj al-Mulk and Terken Khatun set out after Barkiyaruq, but were defeated at Borujerd in 1092–93. Terken Khatun retired with her forces to Isfahan, where she was besieged. Taj al-Mulk who had fled at the battle of Borujerd, meanwhile came to Barkiyaruq and offered him 200,000 dinars to make him vizier.[9]