Sunan Abi Dawud 3438
سنن أبي داود#3438SahihNarrated Abu Hurairah:The Prophet (ﷺ) forbade to bid against one another
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
Shuaib Al ArnautSahih
Zubair Ali ZaiSahih Bukhari (2140) Sahih Muslim (1413)
In-book reference: 24:23