Ibn Mas'ud sold slaves to al-Ash'ath b. Qais. He then narrated the rest of the tradition to the same effect with some variation of words.
أَنَّ ابْنَ مَسْعُودٍ بَاعَ مِنَ الأَشْعَثِ بْنِ قَيْسٍ رَقِيقًا فَذَكَرَ مَعْنَاهُ وَالْكَلاَمُ يَزِيدُ وَيَنْقُصُ