Muslim bin al-Hajjaj (may Allah have mercy on him), mentioning the disagreement between Salim (may Allah have mercy on him) and Nafi' (may Allah have mercy on him) in the story of the slave, said: The correct view is that of Nafi' (may Allah have mercy on him), even though Salim (may Allah have mercy on him) had a stronger memory than him.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10762