According to historian C. V. Vaidya (1861–1938), Kalhana's account is corroborated by the 13th century text "Chach Nama". A letter in this text, addressed by Raja Dahir to Muhammad bin Qasim, mentions "the King of Kashmir on whose royal threshold the other rulers of Hind had placed their heads, who sways the whole of Hind, even the countries of Makran and Turan, whose chains a great many noblemen and grandees have willingly placed on their knees and against whom no human being can stand." This letter is stated to have been written in 712 CE, so Vaidya theorizes that Lalitaditya's conquests must have occurred during 700-712 CE.