Firishta's History (Gulshan-i Ibrāhīmī) 41.1.8

41.1.8

In the year 755, Feroze built the city of Ferozabad adjoining that of Dehly; and on the 12th of Shaban he marched to Depalpoor, and constructed a canal from the Sutloog to the Kugur. In the year 757 he constructed another canal, between the hills of Mundvy and Surmore, from the Jumna, into which he led seven other minor streams which all uniting ran in one channel through Hansy, and from thence to Raiseen, where he built a strong fort which he called Hissar Feroza. He also conveyed an aqueduct from the Kagur, over the river Soorsutty, to the village of Pery Kehra, where he founded a city, named after him Ferozabad. At the same time he introduced another canal from the Jumna, which filled a large lake he caused to be constructed at Hissar Feroza. In the month of Zeehuj an honorary dress and a letter of congratulation on his accession, were presented from Abool Futteh Aboo-Bukr Aby-Robeea Sooliman, Caliph of Egypt. In the same month, also, he received an embassy with fresh proposals of peace from Bengal, which Feroze accepted, and soon after ratified. From that period, both Bengal and the Deccan became in a great measure independent of Dehly, paying only a small tribute. In the year 758, Zuffur Khan Farsy, coming from Soonargam, was appointed deputy to the vizier.