(43) باب بَيَانِ أَنَّ السَّعْىَ بَيْنَ الصَّفَا وَالْمَرْوَةِ رُكْنٌ لاَ يَصِحُّ الْحَجُّ إِلاَّ بِهِ
Anas (Allah be pleased with him) reported that the Ansar felt reluctant that they should circumambulate between al-Safa' and al-Marwa until it was revealed:
" Verily al-Safa' and al-Marwa are among the Signs of Allah" ; so whoever performs Hajj or 'Umra, for him there is no harm that he should circumambulate between them.
Reference: Sahih Muslim 1278
In-book reference: Book 15, Hadith 290
USC-MSA web (English) reference(deprecated numbering scheme): Book 7, Hadith 2928