Tarikh-i Jahangushay

Tārīkh-i Jahāngushāy (Persian: تاریخ جهانگشای "The History of The World Conqueror") or Tārīkh-i Jahāngushāy-i Juwaynī (تاریخ جهانگشای جوینی) is a detailed historical account written by the Persian Ata-Malik Juvayni describing the Mongol, Hulegu Khan, and Ilkhanid conquest of Persia as well as the history of Isma'ilis.

[5] There are no earlier known Persian illustrated manuscripts from before the Mongol conquest (with the possible exception of Varka and Golshah, which however was created in Konya, modern Turkey, at the time of the Sultanate of Rum sometime in the 13th century), although miniatures are known from Mina'i ceramics.

[6][7] This account of the Mongol invasions of his homeland Iran, written based on survivor accounts, is one of the main sources on the rapid sweep of Genghis Khan's armies through the nomadic tribes of Tajikistan and the established cities of the Silk Road including Otrar, Bukhara, and Samarkand in 1219, and successive campaigns until Genghis Khan's death in 1227 and beyond.

In the time of Genghis Khan, the nerge was converted into an exercise in discipline, with severe punishments for commanders of tens, hundreds, or thousands who let animals escape.

It is reported by British historian Stephen Turnbull[9] that the Mongols ate horse milk powder with water, around 250 grammes a day - although an account they quote mentions that they took 4.5 kg along for an expedition and claims they hunted on campaign, such as digging around for marmots.