Sahih al-Bukhari 345
صحيح البخاري#345SahihNarrated Abu Wail:Abu Musa said to `Abdullah bin Mas`ud, "If one does not find water (for ablution) can he give up the prayer?" `Abdullah replied, "If you give the permission to perform Tayammum they will perform Tayammum even if water was available if one of them found it cold." Abu Musa said, "What about the statement of `Ammar to `Umar?" `Abdullah replied, "`Umar was not satisfied by his statement
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 7:12