Note 528 — Chapter XXXIX · BATTLE OF SIFFIN. A.H. XXXVI., XXXVII. A.D. 657.
Reading edition
When the people refused to throw a bridge of boats over the river at Ricca, a detachment moved farther up, intending to cross by the standing bridge at Membaj; but meanwhile Ashtar threatened to put the inhabitants to the sword, and so had a bridge constructed at Ricca. Ricca (Nicephorium) is at the junction of the Belîk with the Euphrates, at which point the Great River, in its upper course, trends westward, and thus approaches Aleppo. Sûr al Rûm (now in ruins) is a little way west of Ricca. It is near Thapsacus of the ancients, on the line of the march of Cyrus.