From the Shoebat Foundation (the year was 2014):
(VERY RARE FOOTAGE) Muslims Create A Literal River Of Human Blood By Butchering 1500 Innocent PeopleSHOEBAT EXCLUSIVE
By Walid Shoebat and Theodore Shoebat
The reason for throwing victims in the river stems from Khalid bin Walid. When the Christians and Persians from Ullays turned down a peace offer by Khalid bin Al-Walid, the most respected Muslim general in Muslim history.Kindly read the whole thing by clicking here.