[Machine] I heard Abdullah bin Umar say, "We used to wait for the Messenger of Allah ﷺ at the gate, and when he came out, we would follow him until he reached a hill outside the city. He sat down on it and said, 'O people, no one among you should undertake a transaction (buying or selling) until the migrants have an opportunity to do so with the Bedouins. And whoever sells a piece of land, he has the right to take it back within three days, and if he wants to return it, he should return it with an additional payment of similar value or he can return it as it is. The price of its milk and wheat should be fair.' All of Ibn Umar's sons acquired individual ownership of land through this narration." Al-Bukhari commented on this narration, "It is a subject of scrutiny."  

سَمِعْتُ عَبْدَ اللهِ بْنَ عُمَرَ يَقُولُ كُنَّا عَلَى بَابِ رَسُولِ اللهِ ﷺ نَنْتَظِرُهُ فَخَرَجَ فَاتَّبَعْنَاهُ حَتَّى أَتَى عَقَبَةً مِنْ عِقَابِ الْمَدِينَةِ فَقَعَدَ عَلَيْهَا فَقَالَ يَا أَيُّهَا النَّاسُ لَا يَتَلَقَّيَنَّ أَحَدٌ مِنْكُمْ سُوقًا وَلَا يَبِيعَنَّ مُهَاجِرِيٌّ لِأَعْرَابِيٍّ وَمَنْ بَاعَ مُحَفَّلَةً فَهُوَ بِالْخِيَارِ ثَلَاثَةَ أَيَّامٍ فَإِنْ رَدَّهَا رَدَّ مَعَهَا مِثْلَ أَوْ قَالَ مِثْلَيْ لَبَنِهَا قَمْحًا تَفَرَّدَ بِهِ جُمَيْعُ بْنُ عُمَيْرٍ قَالَ الْبُخَارِيُّ فِيهِ نَظَرٌ