SHAFAQNA – It is narrated from Imam Baqer (AS) who said: The most immoral earning is from usury [1]. Also it is narrated: The usurer will be resurrected as a mad person on the Day of Judgment [2].
[1] Kafi, Vol.5, Page 147.
[2] Tafseer Dorrul Manthoor, Vol. 2, page 102.