Ibn Sirin (may Allah have mercy on him) says: I was present with Shurayh (may Allah have mercy on him) when he ruled in favour of a blind man regarding an 'umra. The blind man said to him: O Abu Umayyah, on what basis did you rule for me? Shurayh (may Allah have mercy on him) said: It was not I who ruled for you; rather Muhammad (peace and blessings be upon him) ruled for you forty years ago. He (peace and blessings be upon him) said: "Whoever is given something as an 'umra for his lifetime, it belongs to his heirs when he dies."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الهبات / 11985