وَلِلَّهِ عَلَى النَّاسِ حِجُّ الْبَيْتِ مَنِ اسْتَطَاعَ إِلَيْهِ سَبِيلًا
Pilgrimage to the House is due to Allah from people who are able to make the journey. (Āl ʿImrān 3:97)
When travel resources and appropriate provision for dependents are available, the legal capacity for Hajj may exist even before the person departs on pilgrimage.
Thus the capacity that grounds the obligation differs from the effective enabling through which the act is actually performed.