Al Baqarah, 158 Ayah
2:158
۞ إِنَّ ٱلصَّفَا وَٱلۡمَرۡوَةَ مِن شَعَآئِرِ ٱللَّهِۖ فَمَنۡ حَجَّ ٱلۡبَيۡتَ أَوِ ٱعۡتَمَرَ فَلَا جُنَاحَ عَلَيۡهِ أَن يَطَّوَّفَ بِهِمَاۚ وَمَن تَطَوَّعَ خَيۡرٗا فَإِنَّ ٱللَّهَ شَاكِرٌ عَلِيمٌ ١٥٨
'Inna Aş-Şafā Wa Al-Marwata Min Sha`ā'iri Al-Lahi ۖ Faman Ĥajja Al-Bayta 'Aw A`tamara Falā Junāĥa `Alayhi 'An Yaţţawwafa Bihimā ۚ Wa Man Taţawwa`a Khayrāan Fa'inna Al-Laha Shākirun `Alīmun
Indeed, as-Safa and al-Marwah are among the symbols of Allah . So whoever makes Hajj to the House or performs 'umrah - there is no blame upon him for walking between them. And whoever volunteers good - then indeed, Allah is appreciative and Knowing.