Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) permitted the 'araya sale, provided that "the estimate in it is for five wasqs or less." Dawud the narrator was unsure whether he said "five" or "less than five wasqs." He said: Yes.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10665
Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) "permitted estimation in the 'araya sale in five wasqs or less." Imam Malik (may Allah have mercy on him) said: Yes.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10667
Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) said that the Messenger of Allah (peace and blessings be upon him) "forbade muhaqalah and muzabanah, and granted a concession to the people of 'araya to sell them according to their estimate." Then he said: "One, two, three and four wasqs."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10668