Sahih al-Bukhari 1678

It is related that 'Urwa said, "When I was young I asked 'A'isha, the wife of the Prophet, 'What do you think of the words of Allah the Blessed and Almighty, "Safa and Marwa are among the Sacred Landmarks of Allah, so anyone who goes on hajj to the House or does 'umra incurs no wrong in going back and forth between them." (2:158) By Allah, so there is nothing wrong in someone not going between Safa and Marwa' She said, 'My nephew, if it was as you say, it would have been, "...incurs no wrong in not going back and forth between of them." However, it was sent down about the Ansar who used previously to go into ihram for the idol Manat which was opposite Qudayd. They considered it to be a sin to go betweenf Safa and Marwa. When Islam came, they asked the Messenger of Allah, may Allah bless him and grant him peace, about that and Allah Almighty sent down, 'Safa and Marwa are among the Sacred Landmarks of Allah, so anyone who goes on hajj to the House or does 'umra incurs no wrong in going back and forth between them.'" Sufyan and Abu Mu'awiya related from Hisham, "Allah does not consider the hajj or 'umra of any person to be complete until they have gone between Safa and Marwa." XI: When someone doing 'umra comes out of ihram Jabir said, "The Prophet, may Allah bless him and grant him peace, commanded that they make it 'umra and do tawaf and then to shorten their hair and come out of ihram."