The Chachnāma (Fatḥnāma-yi Sind) 189: Abú Hakím is sent at the head of ten thousand horse towards Kanauj.

189

He then sent Abú Hakím Shaibání at the head of ten thousand horse towards Kanauj, to convey a letter from the Khalífa, and with instructions to invite the Chief to embrace Muhammadanism, to send tribute, and make his submission. He himself went with the army to the boundary of Kashmír, which was called the five rivers, where Chach, son of Sílaij, the father of Dáhir, had planted the fir and the poplar trees, and had marked the boundary. When he arrived there he renewed the mark of the boundary.