Ibn Umar (Allaah be pleased with them) reported Allaah's Prophet (sallAllaahu alayhi wa sallam) forbidding the sale of fruits until their good condition becomes evident and the purchase of dates for dates. Zaid b. Thabit (Allaah be pleased with him) said that Allaah's Messenger (sallAllaahu alayhi wa sallam) gave a concession in case of the sale known as al-araya, there is an addition of the word an tuba'a in the hadith transmitted by Ibn Numair.