Jami` at-Tirmidhi 1227
With this (same as no. 1226) chain:
"The Prophet ﷺ prohibited selling ears (of grain) until they have whitened (shown their kernals) and are safe from blight, he forbade it for the seller and the buyer."
[He said:] There are narrations on this topic from Anas, Ibn 'Abbas, Jabir, Abu Sa'eed, and Zaid bin Thabit.
[Abu 'Eisa said:] The Hadith of Ibn 'Umar is a Hasan Sahih Hadith. This is acted upon according to the people of knowledge among the Companions of the Prophet ﷺ and others. They dislike selling fruits before their usefulness appears, this is the view of Ash-Shafi'i, Ahmad and Ishaq.
وَبِهَذَا الإِسْنَادِ أَنَّ النَّبِيَّ ﷺ نَهَى عَنْ بَيْعِ السُّنْبُلِ حَتَّى يَبْيَضَّ وَيَأْمَنَ الْعَاهَةَ نَهَى الْبَائِعَ وَالْمُشْتَرِيَ . قَالَ وَفِي الْبَابِ عَنْ أَنَسٍ وَعَائِشَةَ وَأَبِي هُرَيْرَةَ وَابْنِ عَبَّاسٍ وَجَابِرٍ وَأَبِي سَعِيدٍ وَزَيْدِ بْنِ ثَابِتٍ .
قَالَ أَبُو عِيسَى حَدِيثُ ابْنِ عُمَرَ حَدِيثٌ حَسَنٌ صَحِيحٌ . وَالْعَمَلُ عَلَى هَذَا عِنْدَ أَهْلِ الْعِلْمِ مِنْ أَصْحَابِ النَّبِيِّ ﷺ وَغَيْرِهِمْ كَرِهُوا بَيْعَ الثِّمَارِ قَبْلَ أَنْ يَبْدُوَ صَلاَحُهَا . وَهُوَ قَوْلُ الشَّافِعِيِّ وَأَحْمَدَ وَإِسْحَاقَ .