وكذلك من باع ثوبا مذارعة كل ذراع بدرهم ولم يسم جملة الذرعان
Translation: The same applies to one who sells a piece of cloth by the cubit at one dirham per cubit without stating the total number of cubits.
Mudara'ah means selling by a length measured in cubits. A dhira' is a historical length measure.
If a piece of cloth is offered at one dirham per cubit with no statement of its total length, Quduri treats it like the defective flock sale under Abu Hanifah's view.
Knowing the per-cubit price does not always determine the total object sold and the aggregate price.