Narrated Jabir ibn Abdullah: Ibn Rawahah assessed them (the amount of dates) at forty thousand wasqs, and when Ibn Rawahah gave them option, the Jews took the fruits in their possession and twenty thousand wasqs of dates were due from them.

Narrated Jabir ibn Abdullah: When Allah bestowed Khaybar on His Prophet ﷺ as fay (as a result of conquest without fighting), the Messenger of Allah ﷺ allowed (them) to remain there as they were before, and apportioned it between him and them. He then sent Abdullah ibn Rawahah who assessed (the amount of dates) upon them.