english: All the books from Bait al-Hikma library, the most famous library in its day, were thrown in the Tigris River, and the Tigris changes color with ink.
non_english: Alle boeken van de Bait al-Hikma-bibliotheek, toentertijd de beroemdste bibliotheek, werden in de rivier de Tigris gegooid, en de Tigris veranderde van kleur door de inkt.