(44) باب أَعْضَاءِ السُّجُودِ وَالنَّهْىِ عَنْ كَفِّ الشَّعْرِ، وَالثَّوْبِ، وَعَقْصِ الرَّأْسِ، فِي الصَّلاَة
Ibn 'Abbas reported from the Messenger of Allah (ﷺ):
I was commanded to prostrate myself on seven bones and not to fold back clothing or hair.
Reference: Sahih Muslim 490 b
In-book reference: Book 4, Hadith 258
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 992