عَنْ رَجُلٍ مِنْ أَصْحَابِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ لَا يُتَلَقَّى جَلَبٌ وَلَا يَبِيعْ حَاضِرٌ لِبَادٍ وَمَنِ اشْتَرَى شَاةً مُصَرَّاةً أَوْ نَاقَةً فَهُوَ بِآخِرِ النَّظَرَيْنِ إِذَا هُوَ حَلَبَ إِنْ رَدَّهَا رَدَّ مَعَهَا صَاعًا مِنْ طَعَامٍ قَالَ الْحَكَمُ أَوْ صَاعًا مِنْ تَمْرٍ
It is narrated from a Companion that the Noble Prophet (peace and blessings be upon him) said: Do not meet the caravan bringing trade goods on the way, nor should a townsman sell goods on behalf of a villager. And whoever buys a goat or she-camel whose milk has been withheld, after milking it he will have two options: if he wishes to return it, he must also return one sa’ of grain or dates along with it.