Bismillah Walhamdulillah Was Salaatu Was Salaam ‘ala Rasulillah

Narrated Abu Huraira (Radi-Allahu ‘anhu):

I heard Allah’s Apostle (Sallallahu ‘Alaihi Wa Sallam) saying, “The swearing (by the seller) may persuade the buyer to purchase the goods but that will be deprived of Allah’s blessing.”

Bukhari Vol. 3 : No. 300