Firishta's History (Gulshan-i Ibrāhīmī) 35.1.4

35.1.4

Julal-ood-Deen Feroze, at first, preserved, for some months, the young Prince Keiomoors alive, as a cloak to his usurpation; but having established himself firmly in his government, he caused him to be put to death. He was himself seventy years of age when he ascended the throne. He changed the colour of the royal umbrella from red to white, and was guilty of no further acts of cruelty, after the death of the young Prince, but became distinguished for his humanity and benevolence. He had no great confidence in the loyalty of the people of Dehly, and therefore resided at Kelookery, which he strengthened with fortifications, and beautified with fine gardens and terraced walks by the side of the river. The omras, following the King's example, built palaces around, so that Kelookery became known by the name of the new city. Yooghrish Khan, the King's brother, was appointed Aariz-ool-Moomalik: the King's eldest son, Yekhtyar-ood-Deen, received the title of Khan Khanan, and the second son that of Urkully Khan; on each of whom estates were conferred, and they maintained separate establishments.