Sahih al-Bukhari 906
صحيح البخاري#906SahihNarrated Anas bin Malik:The Prophet (ﷺ) used to offer the prayer earlier if it was very cold; and if it was very hot he used to delay the prayer, i.e. the Jumua prayer
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: 11:30