"Do not go out to meet the riders, and do not urge someone to cancel a sale he has already agreed upon os as to sell him your own goods, do not artificially inflate prices, and let not a town-dweller sell for a desert-dweller." (Sahih ) (Using translation from Nasāʾī 4496)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ «لَا تَلَقَّوُا الرُّكْبَانَ لِلْبَيْعِ وَلَا يَبِيعُ بَعْضُكُمْ عَلَى بَيْعِ بَعْضٍ وَلَا تَنَاجَشُوا وَلَا يَبِيعُ حَاضِرٌ لِبَادٍ»