(56) باب أَمْرِ الصَّفَا وَالْمَرْوَةِ
Isma'il bin Abi Khalid said I heard 'Abd Allaah bin Abi Aufa narrated this tradition. His version added "He then came to Al Safa' and Al Marwah and ran between them seven times and then shaved his head.
Reference: Sunan Abi Dawud 1903
In-book reference: Book 11, Hadith 183
English translation: Book 10, Hadith 1898