Sunan Abi Dawud 492
سنن أبي داود#492SahihNarrated Sa'id: and the narrator Musa said: As far as Amr thinks, the Prophet (ﷺ) said: The whole earth is a place of prayer except public baths and graveyards
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 ZaiIsnaad Sahih
In-book reference: 2:102