“O you who believe! Be afraid of Allaah and give up what remains (due to you) from Ribaa (from now onward) if you are (really) believers!"

"And if you do not do it, then take a notice of war from Allaah and His Messenger!"

" but if you repent, you shall have your capital sums. Deal not unjustly (by asking more than your capital sums), and you shall not be dealt with unjustly (by receiving less than your capital sums) "

Surah al-Baqarah 278-279