Sunan Abi Dawud 3512
سنن أبي داود#3512SahihAl-Qasim b. 'Abd al-Rahman reported on the authority of his father: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
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Al-AlbaniSahih
Muhammad Muhyi Al-Din Abdul HamidSahih
Zubair Ali ZaiHasan
In-book reference: 24:97