(27) باب الْقَسَامَةُ فِي الْجَاهِلِيَّةِ
Narrated Ibn 'Abbas:
To run along the valley between two green pillars of Safa and Marwa (mountains) was not Sunna, but the people in the pre-islamic period of ignorance used to run along it, and used to say: "We do not cross this rain stream except running strongly. "
Reference: Sahih al-Bukhari 3847
In-book reference: Book 63, Hadith 73
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 5, Book 58, Hadith 186