Volume 3, Book 34, Number 369:
Narrated Abu Huraira:
Allah’s Apostle said, “A buyer should not urge a seller to restore a purchase so as to buy it himself,
and do not practice Najsh; and a town dweller should not sell goods of a desert dweller.”
Volume 3 – 487 / 1700
SAHIH BUKHARI VOLUME 3 > BOOK 34: SALES AND TRADE