Quran Al-Baqarah 2:158

Translation

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.