تراهنا

They two laid bets, wagers, or stakes, each with the other; synonym تَوَاضَعَا الرُّهُونَ. (TA.) And تراهن القَوْمُ The party contended together, every one of them laying a bet, wager, or stake, in order that the person outstripping should take the whole when he overcame. (Msb.)