Sunan Abi Dawud 476
سنن أبي داود#476SahihAnas b. Malik reported:The Messenger of Allah(ﷺ) said: Spitting phlegm in the mosque... The narrator then transmitted the rest of the tradition to the same effect
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
In-book reference: 2:86