(157) باب أَعْضَاءِ السُّجُودِ
Narrated Abdullah ibn Abbas:
Ibn Abbas reported the Prophet (ﷺ) as saying: I have been commanded - according to the version of Hammad: Your Prophet (ﷺ) was commanded - to prostrate on seven (bones), and not to fold back the hair or the clothing. (TR)
Reference (TR): Sunan Abi Dawud 889 (TR)
In-book reference (TR): Book 2, Hadith 499 (TR)
English translation (TR): Book 3, Hadith 888 (TR)