"Then Muhammad, son of Kasim, went to old Brahmanabad, two parasangs f rom Mansura, which town indeed did not then exist, its site being a forest. The remnant of the army of Dahir rallied at Brahmanabad and resistance being made, Muhammad was obliged to resort to force, when eight, or as some say, twenty-six thousand men were put to the sword. He left a prefect there. The place is now in ruins."
January 1, 1970
https://en.wikiquote.org/wiki/Al-Baladhuri