duty to visit Mecca (Makkah)

فِيهِ ءَايَـٰتٌۢ بَيِّنَـٰتٌ مَّقَامُ إِبْرَٰهِيمَ ۖ وَمَن دَخَلَهُۥ كَانَ ءَامِنًا ۗ وَلِلَّهِ عَلَى ٱلنَّاسِ حِجُّ ٱلْبَيْتِ مَنِ ٱسْتَطَاعَ إِلَيْهِ سَبِيلًا ۚ وَمَن كَفَرَ فَإِنَّ ٱللَّهَ غَنِىٌّ عَنِ ٱلْعَـٰلَمِينَ

there are clear signs in it; it is the place where Abraham stood to pray; whoever enters it is safe. Pilgrimage to the House is a duty owed to God by people who are able to undertake it. Those who reject this [should know that] God has no need of anyone.