The Family Of Imran - 3:97
There are clear signs there: It is the place of Abraham´s stand (against idolatry). Whoever enters it must be in safety. Those of the people who are able to travel are obliged to pilgrimage to that House (the Ka´bah) for the sake of Allah. Whoever disbelieves, let him know that Allah is not in need of anyone.
There (in the Ka'bah) are clear signs:
The Cow/2:158
Safa and Marwa (the hills) are among the signs of Allah. He who comes to the House for pilgrimage or visitation (Umrah) may go back and forth between them. And whoever does a good deed out of the heart, Allah is the Recompenser of thanks, the All-Knowing.
اِنَّ الصَّفَا وَالْمَرْوَةَ مِنْ شَعَٓائِرِ اللّٰهِۚ فَمَنْ حَجَّ الْبَيْتَ اَوِ اعْتَمَرَ فَلَا جُنَاحَ عَلَيْهِ اَنْ يَطَّوَّفَ بِهِمَاۜ وَمَنْ تَطَوَّعَ خَيْراًۙ فَاِنَّ اللّٰهَ شَاكِرٌ عَل۪يمٌ