A wasq is sixty saa, measured by the Hajjaji measure.
حدثنا محمد بن قدامة بن أعين حدثنا جرير عن المغيرة
الوسق ستون صاعا مختوما بالحجاجي
No references are available.
Its chain is daif. Ibn Abu Shayba reported it, 3/138, from the hadith of Mughira bin Miqsam, and he is a mudallis and narrated it with "an."