Surah Al-Baqarah, Verse 158

۞ إِنَّ ٱلصَّفَا وَٱلۡمَرۡوَةَ مِن شَعَآئِرِ ٱللَّهِۖ فَمَنۡ حَجَّ ٱلۡبَيۡتَ أَوِ ٱعۡتَمَرَ فَلَا جُنَاحَ عَلَيۡهِ أَن يَطَّوَّفَ بِهِمَاۚ وَمَن تَطَوَّعَ خَيۡرٗا فَإِنَّ ٱللَّهَ شَاكِرٌ عَلِيمٌ١٥٨

inna l-ṣafā wal-marwata min shaʿāiri l-lahi faman ḥajja l-bayta awi iʿ'tamara falā junāḥa ʿalayhi an yaṭṭawwafa bihimā waman taṭawwaʿa khayran fa-inna l-laha shākirun ʿalīmun

Indeed, aṣ-Ṣafā and al-Marwah are among the symbols of Allāh. So whoever makes ḥajj [pilgrimage] to the House or performs ʿumrah - there is no blame upon him for walking between them. And whoever volunteers good - then indeed, Allāh is Appreciative and Knowing.