عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ يَبْلُغُ بِهِ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ لَا تَلَقَّوُا الْبَيْعَ وَلَا تُصَرُّوا الْغَنَمَ وَالْإِبِلَ لِلْبَيْعِ فَمَنِ ابْتَاعَهَا بَعْدَ ذَلِكَ فَهُوَ بِخَيْرِ النَّظَرَيْنِ إِنْ شَاءَ أَمْسَكَهَا وَإِنْ شَاءَ رَدَّهَا بِصَاعِ تَمْرٍ لَا سَمْرَاءَ
Narrated from Sayyiduna Abu Hurairah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: Do not go out to meet the caravans bringing merchandise (before they reach the market or bazaar), and do not withhold the milk of goats and she-camels for sale. So, whoever buys such an animal will have the choice of two things: if he wishes, he may keep the animal with him, and if he wishes, he may return it, but he must also return a sa’ (measure) of dates along with it, not of wheat.