It was narrated from Dawud bin Salih Al Madani that his father said: I heard Abu Sa'eed Al-Khudri say: "The Messenger of Allah (ﷺ) said: 'Transactions may only be done by mutual consent."'

لا تلتقي أسانيد هذه الأحاديث عند راوٍ واحد، وهي على ١٣ رواة في أعلاها.