On the authority of his father: I heard the Messenger of Allah ﷺ 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.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ فِي حَجَّةِ الْوَدَاعِ يَقُولُ أَلاَ إِنَّ كُلَّ رِبًا مِنْ رِبَا الْجَاهِلِيَّةِ مَوْضُوعٌ لَكُمْ رُءُوسُ أَمْوَالِكُمْ لاَ تَظْلِمُونَ وَلاَ تُظْلَمُونَ أَلاَ وَإِنَّ كُلَّ دَمٍ مِنْ دَمِ الْجَاهِلِيَّةِ مَوْضُوعٌ وَأَوَّلُ دَمٍ أَضَعُ مِنْهَا دَمُ الْحَارِثِ بْنِ عَبْدِ الْمُطَّلِبِ كَانَ مُسْتَرْضَعًا فِي بَنِي لَيْثٍ فَقَتَلَتْهُ هُذَيْلٌ قَالَ اللَّهُمَّ هَلْ بَلَّغْتُ قَالُوا نَعَمْ ثَلاَثَ مَرَّاتٍ قَالَ اللَّهُمَّ اشْهَدْ ثَلاَثَ مَرَّاتٍ