Sahih al-Bukhari 814
صحيح البخاري#814SahihNarrated Sahl bin Sa`d:The people used to pray with the Prophet (ﷺ) tying their Izars around their necks because of their small sizes and the women were directed that they should not raise their heads from the prostrations till the men had sat straight
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: 10:209