Commercial Transactions (Kitab Al-Buyu)
Dawud :: Book 22 : Hadith 3328
Narrated Amr ibn al-Ahwas al-Jushami:
I heard the Apostle of Allah (peace_be_upon_him) say in the Farewell Pilgrimage: "Lo, all claims to usury of the pre-Islamic period have been abolished. You shall have your capital sums, deal not unjustly and you shall not be dealt with unjustly.
Lo, all claims for blood-vengeance belonging to the pre-Islamic period have been abolished. The first of those murdered among us whose blood-vengeance I remit is al-Harith ibn AbdulMuttalib, who suckled among Banu Layth and killed by Hudhayl."
He then said: O Allah, have I conveyed the message? They said: Yes, saying it three times. He then said: O Allah, be witness, saying it three times.