Bismillah Walhamdulillah Was Salaatu Was Salaam ‘ala Rasulillah
Narrated Ibn Abbas (Radi-Allahu ‘anhu):
The last Verse (in the Quran) revealed to the Prophet (Sallallahu ‘Alaihi Wa Sallam) was the Verse dealing with usury (i.e. Riba).
Bukhari Vol. 6 : No. 67