Ahmed bin Sa'id bin Sakhar أحمد بن سعيد بن صخر · Commercial Transactions (Kitab Al-Buyu)

The Messenger of Allah (ﷺ) gave license regarding the sale of 'araya when the amount was less then five wasqs or five wasqs. Dawud b. al-Husain was doubtful. Abu Dawud said: The tradition by Jabir indicates up to four wasqs.