 Meanwhile, Jalal ad-Din established himself in the Sindh Sagar Doab in the Punjab region, and captured the fort of Pasrur.He sent his envoy Ainul Mulk to Iltutmish, seeking an alliance against the Mongols, and requesting for a safe place to stay.According to Juvayni, after deliberating over the matter for several days, Iltutmish refused to provide him a residence on the excuse that no place in his kingdom have a suitable climate or a locality fit for a king.