Sunan Abi Dawud 38
سنن أبي داود#38SahihNarrated Jabir b. 'Abd Allaah:The Apostle of Allaah ( sal Allaahu alayhi wa sallam ) forbade us to use a bone or dung for wiping
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 ZaiSahih Muslim (263)
In-book reference: 1:38