Sahih al-Bukhari 1648
Narrated `Asim:
I asked Anas bin Malik: "Did you use to dislike to perform Tawaf between Safa and Marwa?" He 
said, "Yes, as it was of the ceremonies of the days of the Pre-Islamic period of ignorance, till Allah 
revealed: 'Verily! (The two mountains) As-Safa and Al-Marwa are among the symbols of Allah. It is 
therefore no sin for him who performs the pilgrimage to the Ka`ba, or performs `Umra, to perform 
Tawaf between them.' " (2.158)
حَدَّثَنَا أَحْمَدُ بْنُ مُحَمَّدٍ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا عَاصِمٌ، قَالَ قُلْتُ لأَنَسِ بْنِ مَالِكٍ ـ رضى الله عنه ـ أَكُنْتُمْ تَكْرَهُونَ السَّعْىَ بَيْنَ الصَّفَا وَالْمَرْوَةِ قَالَ نَعَمْ‏.‏ لأَنَّهَا كَانَتْ مِنْ شَعَائِرِ الْجَاهِلِيَّةِ، حَتَّى أَنْزَلَ اللَّهُ ‏{‏إِنَّ الصَّفَا وَالْمَرْوَةَ مِنْ شَعَائِرِ اللَّهِ فَمَنْ حَجَّ الْبَيْتَ أَوِ اعْتَمَرَ فَلاَ جُنَاحَ عَلَيْهِ أَنْ يَطَّوَّفَ بِهِمَا‏}‏‏.‏