Sura al-Baqara 2:158

إِنَّ ٱلصَّفَا وَٱلْمَرْوَةَ مِن شَعَآئِرِ ٱللَّـهِ فَمَنْ حَجَّ ٱلْبَيْتَ أَوِ ٱعْتَمَرَ فَلَا جُنَاحَ عَلَيْهِ أَن يَطَّوَّفَ بِهِمَا وَمَن تَطَوَّعَ خَيْرًا فَإِنَّ ٱللَّـهَ شَاكِرٌ عَلِيمٌ

inna l-ṣafā wa-l-marwata min shaʿāʾiri allāhi fa-man ḥajja l-bayta awi ʿtamara fa-lā junāḥa ʿalayhi an yaṭṭawwafa bihimā wa-man taṭawwaʿa khayran fa-inna allāha shākirun ʿalīmun

Behold! Safa and Marwa are among the Symbols of Allah. So if those who visit the House in the Season or at other times, should compass them round, it is no sin in them. And if any one obeyeth his own impulse to good,- be sure that Allah is He Who recogniseth and knoweth.