What did the people in the pre-Islamic period of ignorance say when running along the valley between the two green pillars of Safa and Marwa (mountains) according to Prophet Muhammad (saw)?
     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. "