English: Miniture from a copy of Hayton of Corycus's La Flor des estoires de la terre d'Orient in the Austrian National Library, illustrating his account of the Battle of Mohi in 1241 between Hungarians and Mongols and the purported drowning of Batu Khan in the river, which is a confused report of the death of the Mongol general known as Ba’atur, who drowned during a crossing of the Sajó, an ignominious reverse despite the Mongols' overall victory.

Son cheval fu tant traveillies qu’il ne pout plus, e fu noiez Batho, e grant partie de ses genz dedeins le flume avant que poissent venir a l’autre rive. Quant les Tartars, qui encore n’estoient entrez en l’eive, virent leur seignor Batho e leur compaignies noier, dolens e tristes s’en retournerent au roiaume de Roussie e de Comaine, ne onques puis les Tartars n’entrerent en Alemaigne.

— Hayton of Corycus, in: La Flor des estoires de la terre d'Orient

His horse was so exhausted that it could not continue, and Batu was drowned with a great number of his people in the river before they could reach the other bank. When the Tartars who had not yet entered the water saw their lord Batu and their companions drown, they returned mournfully and sadly to the kingdom of Russia and of Cumania; never again did the Tartars invade Germany

— trans. Pow, Stephen, "Later Rumors of Mongol Defeat in Europe in the Mid-Thirteenth Century: Batu's Drowning in Austria and the Saint Ladislaus Legend in Russia." Vestnik of Saint Petersburg University History, vol. 70, No. 1, April 2025, pp. 9–10.