"Hold on to your wealth and do not give it on the basis of 'Umra. For whoever is given something on the basis of 'Umra for the rest of his life, it belongs to him for the rest of his life and after his death." (Using translation from Nasāʾī 3737)
أَنَّ رَسُولَ اللهِ ﷺ قَالَ أَمْسِكُوا عَلَيْكُمْ أَمْوَالَكُمْ وَلَا تُعْمِرُوهَا فَإِنَّهُ مَنْ أَعْمَرَ شَيْئًا حَيَاتَهُ فَهُوَ لَهُ حَيَاتَهُ وَبَعْدَ مَوْتِهِ