Chapter 52: Witnesses
Narrated 'Abdullah bin Abu 'Aufa: A man displayed some goods in the market and took a false oath that he had been offered so much for
them though he was not offered that amount Then the following Divine Verse was revealed: -- "Verily!
Those who purchase a little gain at the cost of Allah' s covenant and their oaths... Will get painful
punishment." ( 3.77) Ibn Abu 'Aufa added, "Such person as described above is a treacherous Riba eater
(i. e. eater of usury).
Sahih al-Bukhari 2675