Hadithcore
Sunan Abi Dawud, 1903

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.

حَدَّثَنَا تَمِيمُ بْنُ الْمُنْتَصِرِ، أَخْبَرَنَا إِسْحَاقُ بْنُ يُوسُفَ، أَخْبَرَنَا شَرِيكٌ، عَنْ إِسْمَاعِيلَ بْنِ أَبِي خَالِدٍ، قَالَ سَمِعْتُ عَبْدَ اللَّهِ بْنَ أَبِي أَوْفَى، بِهَذَا الْحَدِيثِ زَادَ ثُمَّ أَتَى الصَّفَا وَالْمَرْوَةَ فَسَعَى بَيْنَهُمَا سَبْعًا ثُمَّ حَلَقَ رَأْسَهُ ‏.‏

References2 variants
In-Book Reference
Book 11, Hadith 183
English Reference
Book 10, Hadith 1898