سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 4494
The Book of Financial Transactions
The Town-Dweller Selling For A desert-Dweller
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا خَالِدٌ، قَالَ حَدَّثَنَا ابْنُ عَوْنٍ، عَنْ مُحَمَّدٍ، عَنْ أَنَسٍ، قَالَ نُهِينَا أَنْ يَبِيعَ، حَاضِرٌ لِبَادٍ .
It was narrated that Anas said: "It was forbidden to us for a town-dweller to sell for a desert-dweller." (Sahih )
Sunan an-Nasa'i, 4494