Sayyiduna Abdullah bin Umar (may Allah be pleased with them both) relates that Sayyiduna Zayd bin Thabit (may Allah be pleased with him) told him that the Messenger of Allah (peace and blessings be upon him) granted permission to sell 'araya according to their estimated amount.
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4758