Sahih al-Bukhari 1737
صحيح البخاري#1737SahihNarrated `Abdullah bin `Amr bin Al-`As:I witnessed the Prophet (ﷺ) when he was delivering the sermon on the Day of Nahr. A man stood up and said, "I thought that such and such was to be done before such and such. I got my hair shaved before slaughtering." (Another said), "I slaughtered the Hadi before doing the Rami." So, the people asked about many similar things. The Prophet (ﷺ) said, "Do it (now) and there is no harm in all these cases." Whenever the Prophet (ﷺ) was asked about anything on that day, he replied, "Do it (now) and there is no harm in it
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: 25:215