Wiśniowiecki also fought against the Tatars in 1640 – 46 , whose raids on the south @-@ east frontier of the Commonwealth endangered his holdings . In 1644 together with Hetman Stanisław Koniecpolski he took part in the victorious Battle of Ochmatów , in which they crushed forces of Crimean Tatars led by Toğay bey ( Tuhaj Bej ) .