Tawus bin Kaysan طاوس · The Chapters on Business Transactions

Abdullah bin Mas'ud sold one of the slaves from the state to Ash'ath bin Qais, and they differed concerning the price. Ibn Mas'ud said: "I sold him to you for twenty thousand,' but Ash'ath bin Qais said: "I bought him from you for ten thousand." 'Abdullah said: "If you want, I will tell you a Hadith which I heard from the Messenger of Allah (ﷺ)" He said: "Tell me it." He said: "I heard the Messenger of Allah (ﷺ) say:…