كتاب البيوع
7  
Business Transactions
He also reported it Mawquf (as a saying of a Companion, i.e.) Ibn 'Abbas with a strong chain of narrators, and al-Baihaqi held it to the most correct narration.
وَأَخْرَجَهُ أَيْضاً مَوْقُوفاً عَلَى اِبْنِ عَبَّاسٍ بِإِسْنَادٍ قَوِيٍّ, وَرَجَّحَهُ اَلْبَيْهَقِيُّ 1‏ .‏


‏1 ‏- المراسيل ( 182 )‏، وانظر سنن البيهقي ( 5 / 340 )‏.‏

Sunnah.com reference : Book 7, Hadith 55
English translation : Book 7, Hadith 0
Arabic reference : Book 7, Hadith 823